Cam specs difference between truck and 240

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

Is there a difference in cam specifications (lift/ duration) between the stock KA24E's in the Hardbody and the 240sx? What is the lift and duration on the truck if there is a difference?

Post by **deviousKA** » Mon Mar 29, 2004 4:16 pm

Yes there is a difference, but the stock lift/duration for the truck cam i do not know, i will find out. The truck version gives much more low end grunt and becomes less efficient sooner

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

Thanks for checking up on this for me, are you sure the differences are in the cam profiles and not ECU, transmission gearing, rear diff. gearing, and or other engine accessories (intake, exhaust, fuel system, etc.)? Actual lift and duration numbers would be much appreciated.

Post by **deviousKA** » Mon Mar 29, 2004 4:16 pm

i would compare the camshafts myself, but i do not have the proper tools to measure lift/duration. Cam specs are sort of tricky to measure, and to compare with others, because of different beginning and end measurements of duration. Some people begin/end measuring duration at different lifts. I will do a basic comparison tho with somewhat basic tools, to show that there is a difference between truck/240 cams.

In my coupe 240, i have run both truck and 240sx cams, and there is a definate difference.

Post by **eddiec** » Mon Mar 29, 2004 4:16 pm

and what is your opinion between the truck/240 cams?

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

deviousKA, thanks in advance for the specs. Also, please give your overall impressions on the feel of both cams.

Post by **deviousKA** » Mon Mar 29, 2004 4:16 pm

Well lets just say that with the truck cam in my 240 engine (it has a truck head to but that doesnt make a difference) got the nickname "stumpy". It feels like a stump puller, easily could pull a trailer with it, or pull a full size 4x4 out of the ditch if it could get enough traction. Definately makes more power under 4000 rpm. The 240 cam almost feels like less power, but it pulls much more freely from 4k-6k. If you have access to both cams, it is very easy to swap them in and out to find the one you like best.

Im not sure but i assume the lift between the cams would be the same, with the difference being in duration.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

thanks for the input. I won't be putting the truck cam in my car since I've got a Nismo cam already. The reason I am asking is that I now have the old stock 240 cam and was thinking of giving it to my friend who has a truck as a free upgrade but just wanted to know what he will be gaining and losing. If you or anyone can find the actual lift and duration that would be cool. Thanks again.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

Okay, lovemysan2 has answered this question on a different thread.

From a 96 Nissan Hardbody PU w/ KA24E: 232 duration, .382 lift as compared to 90 240sx w/ KA24E: 240 (intake) and 248 (exhaust) duration, .409 lift.

Assuming no change as years progressed, a SOHC Hardbody can gain mid and high RPM power with a SOHC 240sx camshaft, but may not be able to haul heavy loads as well.

Post by **deviousKA** » Mon Mar 29, 2004 4:16 pm

Hey, good info. I was certain of the cam difference, had not been able to check.

Hey lovemysan, if you do read this, where did you obtain the cam specs?

edit: other post, i see, nm

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

I would have to agree that the 240sx cam feels almost like you loose power. It has a better power average after 3500rpms.

I got my cam specs from the FSM. Ahh the fsm is wonderful.

"Stumpy!" thats funny the first time I drove my little brothers altima I called it "stodgey". Its actually pretty quick though.

I'm thinking hard about that 404 cam! Couldn't you just loan me yours for a while.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

My stock one's up for sale. Email me at [email protected] and make offer plus $15 for shipping. It has about 75xxx miles on it and for the last several years it's only seen synthetic oil. It's in real good shape.

What do you mean by 404?

Post by **deviousKA** » Mon Mar 29, 2004 4:16 pm

its worth the 250 bucks or whatever it is now. It is an excellent all around higher end cam. Solid lifter conversion with this cam vs. with stock hydros, i gained about 2-4hp and much better response especially in the higher rpms. Stock springs and retainers.

Once you buy the pdm c404h, you probably will never want to sell it. No loans, hehe

Post by **Calesta** » Mon Mar 29, 2004 4:16 pm

niznos wrote:Okay, lovemysan2 has answered this question on a different thread.

From a 96 Nissan Hardbody PU w/ KA24E: 232 duration, .382 lift as compared to 90 240sx w/ KA24E: 240 (intake) and 248 (exhaust) duration, .409 lift.

Assuming no change as years progressed, a SOHC Hardbody can gain mid and high RPM power with a SOHC 240sx camshaft, but may not be able to haul heavy loads as well.

Are the intake and exhaust specs the same on the truck cam?

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

Yes, the truck has same specs on both intake and exhaust, that's why I didn't specify which side.

Post by **Calesta** » Mon Mar 29, 2004 4:16 pm

Thanks- I just wanted to make sure.

So basically... if I just got an entire 240sx KA24E for free, it would benefit me to swap the cam into my truck, right? I don't tow very often, so some more high end power would be nice. I was already planning on swapping the intake manifold over.

Would I have to replace anything in the valvetrain when swapping a camshaft over? The truck's engine has 135k miles on it.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

You don't have to replace anything in the valvetrain, but most shops will "recommend" it. I think they are just trying to make more money.

When I switched mine out for the Nismo R4, they recommended new rockers, but it works fine anyway. I am sure someone can tell you why they say that, but it's just not that necessary.

I have a stock 240sx KA24E cam for sale as I said up in a different post. Email me if you want it.

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

Hey calesta, nice to see you coming out of the woodwork. I had to replace one dead lifter a while back. Other than that I didn't replace anything just slap it in there and don't drop the chain.

lovemysan

Niznos can you give us an opinion of your R4. And what did it do to your fuel mileage. I'm pretty sure you lost some low end with it, I'm curious to know where it starts to feel as strong as the stock cam.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

lovemysan2, hey your "car:" on your little name box next to your posts still say "one dead lifter".

I have not been able to check on the fuel mileage since I've been doing other mods, though my impression is that it really didn't change much. That also may have to do with the MSD I followed up with almost immediately after that cam. The feel of the R4 is that it is a little weaker under 3000RPM's, not much, but noticeable. Then at around 3000-3500 it comes on almost night and day into the sweet spot that lasts all the way to red. I don't take my car past 6000 as a rule, but it is still going strong when I shift. My only complaint is the idle. Yes I did expect the idle to suffer as with any real cam upgrade, but it seems the ECU never gets used to it as it hunts around sometimes from 600-800. This may be due to other minor tuning problems so I can't entirely pin this on the R4. The idle is lopey and my old engine mounts should probably be replaced soon just to be safe. Overall I really like this cam. Didn't lose much on the low, and loads of fun after 3000. Decent price and no need for machine work on the towers.

Keep in mind that this is on my 240 so if it's going in your truck, your impressions may differ. I hope I was of some help.

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

Well you answered my question nicely. If its not going to make equal power around 2500rpms it prolly hurt more than help. My truck is saddled with the large port head and 4 into 1 intake so I believe I would be sending a mixed message with a cam that wild. The idle "problem" sounds great. I would love to have a nasty idle.

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

I don't recall all the specs or the place I found it, but Nismo has a R6 cam for the KA24E that's supposed to be milder. You may want to investigate that too. I think I just ran a search on the net for it and it came up with only one place that stocks and sells it at the same price as the R4.

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

248/252 duration with .422 lift

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

I think

Post by **niznos** » Mon Mar 29, 2004 4:16 pm

The stock cam I mentioned much earlier on this thread has been sold. Not that anyone here was jumping up and down to have it. LOL

Post by **lovemysan2** » Mon Mar 29, 2004 4:16 pm

Yeah well I got my 240 cam for $25. But 75000k was pretty low mileage

Post by **Calesta** » Mon Mar 29, 2004 4:16 pm

lovemysan2 wrote:Hey calesta, nice to see you coming out of the woodwork. I had to replace one dead lifter a while back. Other than that I didn't replace anything just slap it in there and don't drop the chain.

Thanks man. This forum is definitely more performance oriented than your standard "lay frame and throw sparks" crowd over at NissanMinis. The vB implementation here is just a little screwy though... I'll drop the cam in once the truck isn't my primary transportation (a few weeks) and see what happens.

lovemysan2 wrote:248/252 duration with .422 lift

I think you said 248/254 before- 8 and 16 larger than the truck cam.

Post by **irax** » Mon Mar 29, 2004 4:16 pm

what about the DE cams ? are they any different ?

Cam specs difference between truck and 240

Cam specs difference between truck and 240

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums