Thinking of buying this SR. . . Need some advice.

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Jagstang
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Hey, today I checked out an S13 Blacktop SR that's in a rough shell, and It has unknown km's. It supposedly had 70k km's back in 2006 when purchased, so by now, it probably has 140+ km's.

Here's some details on the motor. It hasn't been driven for 1 year. . . The S13 didn't have a hood, so the blacktop was exposed in a garage all year (lots of dust on it etc). Oil is old, and the fuel is old.

We did a cold crank compression test on it by removing the fuel pump fuse, and keeping the throttle body wide open, and cranking it with and without all the spark plugs in. Here's the weird part. At first it was reading 95 PSI across all 4 cylinders. . . They were all pretty dead on. . . At the time, when we did this, we forgot to press down on the gas pedal, so we redone it with the gas pedal pressed in.

The results were basically the same. So we put some oil in the cylinder and it brought it up like about 8 psi. . . At this point we noticed that there's probably not much air entering the intake, so we removed the OEM tubing (that's connected to the side mount), and managed to bring it to 120 PSI. . .

So my question is, I understand these numbers are VERY low, but the guy told me he's been in a LOT of SR's, and tells me this one is clean, idles smooth, transmission is smooth, power is still very strong (all this a couple days ago, he bought the car from a friend and drove it to his house which is 2 mintues away).

So is the reasoning's behind the low PSI numbers due to the the old oil, and the 1 year old gas, let alone it sitting for a year (valve seals sticking)?

And is it a possibility that the engine may have had some work done to get the lower PSI? Such as an aftermarket Head Gasket, and forged internals etc?

He said he was going to drain the old gas out tomorrow (and put fresh gasoline in), and idle it for a long time and warm it up, and then re do the compression test. I wonder if that would make it more normal?

Anyways, here's some pictures of the actual SR.

Image

Image


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asoomal
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That SR looks like s***.

Hoffman5982
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Dont do it. Putting the SR in my car was the biggest mistake I have ever made. If it already has that low of compression I wouldn't even touch it. Judging by the shape of that bay the guy probably skimped out on a lot of stuff

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Razi
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That's one ghetto setup...

Wait till he gets it running, and listen to how it idles and revs.
The engine looks completely stock, there's a better chance of it's numbers being low due to wear than modification.

Hoffman5982
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The fact that he's having to try so hard to get the numbers hight would make me walk away. Of course he's going to tell you it runs really good compared to other sr's hes driven, hes trying to sell it. Unless your getting it for an unbelievable deal I would save up and buy a cleaner motor, or turbo your KA

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Good call checking compression, but save up and get a the newest cleanest one you can get.

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asoomal
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He doesn't wanna save up....

So he's going for the cheapest SR he can find. I've told him countless times to get an S14 one which comes with the T28, and well...he drives an S14 -_-.

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E7-S14
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Offer Him 800bucks, due to crappy compression, and get it running,if it runs smooth, and push comes to shove, tear it down do rings, bearings, and head gasket and call it a day.

but buying a problem SR is always a bad idea. unless you know exactly what your getting into.

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asoomal wrote:He doesn't wanna save up....

So he's going for the cheapest SR he can find. I've told him countless times to get an S14 one which comes with the T28, and well...he drives an S14 -_-.
Stupid... Unless you get the front clip you wont know the KM's and its not going to be 40-60k as advertised. I'd save for the S15 SR but thats me.

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Jagstang
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asoomal wrote:He doesn't wanna save up....

So he's going for the cheapest SR he can find. I've told him countless times to get an S14 one which comes with the T28, and well...he drives an S14 -_-.
Dude, you don't even know what you're talking about. The only reason I am interested in this SR swap is because it's in my province, and I can actually touch it. No worries about buying from an online site, which is something i've never seen in person. But I'll most likely not be buying it. It's just not wise to go and purchase a dirty a** engine that has been sitting for a year. But then again. . . All SR's have been sitting for a long time. . .

We'll see what the compression results will be like once warmed up. If it's still under 150, I will not even consider it 1 bit.

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badbob2121
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well either way you should consider a full rebuild if bought. if you get it for a cheap price i would get it, and take your time and rebuild it...

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asoomal
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Kk, let me break this down for you guys:

The only reason he's interested in an SR is cause he needs more power, of course, but for very cheap, and doesn't wanna go KA.

His KA has less then 125 000 miles on it, with perfect compression. It burns some oil due to valve stem seals. He thinks the motor is bunk and wants to swap cause well everyone here has SR's and they've all told him KA's are junk.

It's perfect for a turbo or super.

Yet, he thinks $2500 dollars is a rip for an S14 SR20DET.

So he is searching for a pos SR that'll cost around from free to $1500. Fred, I've told you many times before, an SR swap under $3000 is s***. Boost your KA for $1500.

He does not want to rebuild an SR either, cause it's "not worth his time or money."

Oh, he has also stated that he will not "waste money" on engine mounts when he does a swap. They haven't been touched since 1994.

Fred, if you truly want to do an SR swap...get the S14 one, Wiring Specialties Harness, get NEW MOTOR MOUNTS, fuel pump, injector seals, intake mani gaskets, water pump and seals and a nice FMIC. That's the bare minimum.

It'll cost you over $4000...but it'll be done right.

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Jagstang
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asoomal wrote:Kk, let me break this down for you guys:

The only reason he's interested in an SR is cause he needs more power, of course, but for very cheap, and doesn't wanna go KA.

His KA has less then 125 000 miles on it, with perfect compression. It burns some oil due to valve stem seals. He thinks the motor is bunk and wants to swap cause well everyone here has SR's and they've all told him KA's are junk.

It's perfect for a turbo or super.

Yet, he thinks $2500 dollars is a rip for an S14 SR20DET.

So he is searching for a pos SR that'll cost around from free to $1500. Fred, I've told you many times before, an SR swap under $3000 is s***. Boost your KA for $1500.

He does not want to rebuild an SR either, cause it's "not worth his time or money."

Oh, he has also stated that he will not "waste money" on engine mounts when he does a swap. They haven't been touched since 1994.

Fred, if you truly want to do an SR swap...get the S14 one, Wiring Specialties Harness, get NEW MOTOR MOUNTS, fuel pump, injector seals, intake mani gaskets, water pump and seals and a nice FMIC. That's the bare minimum.

It'll cost you over $4000...but it'll be done right.


Argh, if that was the truth, and I can turbo/super the KA for "$1500" I would. But overall, in the end, with all the parts bought, it will be above $3000 minimum. SR.. If I decide to, I can find a really clean SR off the net, and spend about 1600-1900, and get a gasket kit ($150), and fuel pump, and rad, and it will cost about $2500 (or close to the ka-t).

But the SR appeals to me more since 1. It's weight will fit my applications for what I'd like to do on the track this spring. 2. I'm pretty noobish with engine work, and boosting the KA is out of my comfort zone, and everyone in my province works with SR's so it would be easier to go with the SR. It's definitely less complicated, just plug it in. 3 This has been said millions of times, but I agree, it's already boosted, and if I don't run such insane powers, it should hold up fine, since that's what it was built with.

KA's are pretty reliable, and even more reliable when built. But seriously, I'm not planning on running insane numbers, so an SR should be fine (as with the KA. . but I really like the SR, i've been in a car with one, and thought it was great).

In the end, it all depends on the condition of the SR. . . If it's super clean, and everything is in great condition, no point putting in all the extra stuff you mentioned (injector seals, water pump, etc). Plus for now, I don't need a FMIC (even tho they can be had for pretty cheap), the SR's SMIC is more than enough for power goals under 10 PSI.

If the engine is like the blacktop in this thread, by all means, I'll definitely go KA-T cause the amount of work fixing the SR would be as complicated as boosting a KA . . But there's still some extremely clean SR's out there that will pop up.

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asoomal
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You won't find a clean SR for under $2000.

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Lobo240sx
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Shop for a better SR. Be ready to spend 5k to do it right. If that engine is reading less than 145-155psi on each piston, don't waste your time. You will be very disappointed. If you plan on buying it, get ready to take apart.

I bought my SR from here and was clean and low low mileage S13 blacktop. They have s14 as well. Look at the thread place to buy a Sr20det in the RWD SR20 section.

http://www.jdmsource.ca/index.php?cPath=7

where-to-buy-sr20det-engines-t126440.html

Hoffman5982
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Argh, if that was the truth, and I can turbo/super the KA for "$1500" I would. But overall, in the end, with all the parts bought, it will be above $3000 minimum. SR.. If I decide to, I can find a really clean SR off the net, and spend about 1600-1900, and get a gasket kit ($150), and fuel pump, and rad, and it will cost about $2500 (or close to the ka-t).[/quote]

Piecing together a turbo kit for a KA can EASILY cost around a grand. You may not have brand new parts, but they will be newer than a turbo on an SR. So a grand for parts and the rest for a good tune, you'll stay under 2k
But the SR appeals to me more since 1. It's weight will fit my applications for what I'd like to do on the track this spring. 2. I'm pretty noobish with engine work, and boosting the KA is out of my comfort zone, and everyone in my province works with SR's so it would be easier to go with the SR. It's definitely less complicated, just plug it in. 3 This has been said millions of times, but I agree, it's already boosted, and if I don't run such insane powers, it should hold up fine, since that's what it was built with.
See I thought it'd be less complicated too, but it can be a lot more complicated than you though. Here I am 6 months later and Im tearing my motor down AGAIN
KA's are pretty reliable, and even more reliable when built. But seriously, I'm not planning on running insane numbers, so an SR should be fine (as with the KA. . but I really like the SR, i've been in a car with one, and thought it was great).
KA's are more than pretty reliable. They are VERY reliable. I beat the living sh** out my first 240. It was my first car and there was a time that I checked the oil dip stick and there was barely anything on it. That car is still being driven today by a guy who needed a cheap car because he ran his other car out of oil and the motor siezed.
In the end, it all depends on the condition of the SR. . . If it's super clean, and everything is in great condition, no point putting in all the extra stuff you mentioned (injector seals, water pump, etc). Plus for now, I don't need a FMIC (even tho they can be had for pretty cheap), the SR's SMIC is more than enough for power goals under 10 PSI.
There is a very good point in putting in all of that extra stuff. Hell, what he named off was a bare minimum. I put about 3500 bucks in extra parts preparing for the swap, and there was still quite a few things I would have liked to have bought for the motor before putting it in. The fact that you don't think that you should replace atleast the water pump astounds me. And if it all depended on the condition of the SR you wouldn't have created this thread asking if you should buy that ratty old beat up SR.
If the engine is like the blacktop in this thread, by all means, I'll definitely go KA-T cause the amount of work fixing the SR would be as complicated as boosting a KA . . But there's still some extremely clean SR's out there that will pop up.
Again, if this was the case, you wouldn't have created this thread. You're trying to spend as little as possible here. It doesn't work like that. This isn't changing your car speakers or replacing wiper blades. Your talking about a whole new engine. That's a major process. The engines are advertised as having 25-40k miles, but if that's the case then why does my S14 SR have bad stem seals? These motors are as old as our cars. They have a lot more mileage than they tell you, I can promise you that. You need to replace as much as you financially can before putting the motor in, or your just creating more problems for yourself in the long run. Trust me. If so many people say the same thing, there must be some truth to it.

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asoomal
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THANK YOU!!!


He'll still pull of a Nala though.

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badbob2121
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Hoffman im not disagreeing with most of the comments you stated

BUT you have had the worst luck with an sr swap ive ever seen.... on forrums and in person

so dont bash anyone interested in the swap..


but to Jagstang i always stand by this analogy when it comes to any build

cheap - fast - reliable

^^ pick two because it is impossible to have all three

Hoffman5982
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I wasn't saying that he's going to have the same luck I have had, what Im saying is that to avoid any possibility of having problems as bad as mine he shouldn't cheap out. I cheaped out on where I bought my motor from.I thought that because I was replacing almost everything it wouldn't matter, and you see how that turned out. I wasn't trying to bash him on anything except that he's contradicting himself by saying he will only consider clean motors. The motor he posted, from the looks of it AND according to compression test, is in no way clean. Im not coming back at you badbob, I just wanted to clarify that I wasn't trying to come off as an a**

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Jagstang wrote:We did a cold crank compression test on it by removing the fuel pump fuse, and keeping the throttle body wide open, and cranking it with and without all the spark plugs in. Here's the weird part. At first it was reading 95 PSI across all 4 cylinders. . . They were all pretty dead on. . . At the time, when we did this, we forgot to press down on the gas pedal, so we redone it with the gas pedal pressed in.

The results were basically the same. So we put some oil in the cylinder and it brought it up like about 8 psi. . . At this point we noticed that there's probably not much air entering the intake, so we removed the OEM tubing (that's connected to the side mount), and managed to bring it to 120 PSI. . .

So is the reasoning's behind the low PSI numbers due to the the old oil, and the 1 year old gas, let alone it sitting for a year (valve seals sticking)?

And is it a possibility that the engine may have had some work done to get the lower PSI? Such as an aftermarket Head Gasket, and forged internals etc?
You shouldn't have to do all that just to get it to 120 PSI. That is still very low.

Old oil, old gas, etc would not make compression that low.

And, about the aftermarket headgasket, and forged internals...my built KA has 8.6:1 forged pistons and it gets 150PSI across all four cylinders with the throttle CLOSED.

I wouldn't do it man. I really wouldn't. You're gonna spend more money getting this thing running right then what you paid for it.

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Razi
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Jeez you guys are harsh.
StryfeS13 wrote: I wouldn't do it man. I really wouldn't. You're gonna spend more money getting this thing running right then what you paid for it.
:werd:

My thoughts on the 240 is: If your KA is in good condition, turbocharge it.

What you're doing is considering buying an SR that is in a condition that is probably worse than your KA.
Cars are machines, ones that aren't well maintained will always cause more problems in the future than ones that are working fine now, you'll realize this if you ever swap a perfectly good KA for a broken SR.

Sure, the SR comes with a turbo and what not, but if things are leaking and the engine is deteriorating, you're going to end up spending more time and money than if you went KA-T.
Nothing feels worse than putting something in your car (especially an engine) that doesn't work as sweet as the stuff you swapped it out for.

I'd pass on this SR.
Wait around for another one.

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Jagstang
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Yea, I actually decided yesterday that it's nowhere near worth it. It looks like s***, and all the results we got from it sucked balls. In the end, the reason I want to go SR is for the convenience. While prepping the SR for the swap, i'll have my KA in my car for dailying it.

Here in BC, there isn't any full KA swaps with everything (like the SR swap). So all I can do is buy a long block, and i'll need to buy stuff I already have access to. . I just can't use some of the parts off my KA since i'm still driving it.. .

You guys are bringing up the fact that I was considering a POS SR. . . Let's up the standards then to reduce the chances of getting a POS SR like hoffman (no offense). . . What is the bare minimum for an SR's compression test (cold cranked/warmed up)?

I'm thinking of taking 160 PSI minimum for cold cranked SR's (already found one helluva clean S13 SR in Canada. It cold cranked 160 PSI across all 4 cylinders. And each one was dead on 160. The exterior itself is clean as hell. I understand that they probably cleaned it up before taking the pictures, but everything seems physically sound. Nothing shows wear.

Also, there's a picture of the valve cover off, and this beast is clean as hell. No rusted cams, no oil sludge etc, looks like it has been maintained perfectly. So yea, does that sound decent? Sure does to me.

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Razi
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Yeah that SR sounds much much better.

Do most SRs come with working accessories like power steering and A/C?

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Jagstang
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Razi wrote:Yeah that SR sounds much much better.

Do most SRs come with working accessories like power steering and A/C?
Yea, it should with the power steering pump/lines. As for the A/C, i'll need to buy a custom bracket that allows S14 owners with S13 swaps to retain the factory S14 Air Conditioning Compressor and lines.

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Razi
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Sounds good!

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So how in the land o Canada where so many car and engines cross the border are you having trouble finding a swap? I dunno I can tell you have your mind stuck on an SR.

Heres an idea.... buy a SR swapped car, swap motors and goodies and resell the car.

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asoomal
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Dunno why you would wanna waste a perfectly good KA either :S

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Lobo240sx
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Jagstang wrote:Yea, I actually decided yesterday that it's nowhere near worth it. It looks like s***, and all the results we got from it sucked balls. In the end, the reason I want to go SR is for the convenience. While prepping the SR for the swap, i'll have my KA in my car for dailying it.

Here in BC, there isn't any full KA swaps with everything (like the SR swap). So all I can do is buy a long block, and i'll need to buy stuff I already have access to. . I just can't use some of the parts off my KA since i'm still driving it.. .

You guys are bringing up the fact that I was considering a POS SR. . . Let's up the standards then to reduce the chances of getting a POS SR like hoffman (no offense). . . What is the bare minimum for an SR's compression test (cold cranked/warmed up)?

I'm thinking of taking 160 PSI minimum for cold cranked SR's (already found one helluva clean S13 SR in Canada. It cold cranked 160 PSI across all 4 cylinders. And each one was dead on 160. The exterior itself is clean as hell. I understand that they probably cleaned it up before taking the pictures, but everything seems physically sound. Nothing shows wear.

Also, there's a picture of the valve cover off, and this beast is clean as hell. No rusted cams, no oil sludge etc, looks like it has been maintained perfectly. So yea, does that sound decent? Sure does to me.
Since you live in Canada you have the best advantage as far as looking for the perfect SR20. Don't let people get you down about Sr's are bad blah blah blah. Find the right vendor and you will be happy. You can get a bad KA,CA. RB, etc just as well. The minimum compression would be about 145. Try to find an engine in the 150-160+ psi range.

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Lobo240sx
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Razi wrote:Yeah that SR sounds much much better.

Do most SRs come with working accessories like power steering and A/C?
Yes they do. The best thing to do is get a whole front clip to reduce missing parts, or as stated get one that is running 180sx,Silvia,US 240sx and swap it. Stay away from red tops if at all possible unless you plan on building it.

scooz14
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stone cold motors do not make the same compression as a nice warm motor. what brand compression tester did you use? on a cold compression test you are more so looking for large differences in individual cylinders. the better test to do an a cold motor is a dry then wet leakdown test.


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