911 emergency what seems to be the problem?

[Florida240sx]

I'm in the same boat. Going to check my compression this weekend. Almost same story.

[1995240sxSE]

well I think I got good news! I pulled my head off and the 3 cylinders that had oil on spark plugs 1,2 and 3 the head gasket was blown between them 3 and the timing chain! Wahooo. I am gonna get the gasket tomarrow! BTW I have deatch werks 480cc's and a walbro 255

[Florida240sx]

You check your head to see if it's warped???

[1995240sxSE]

it looks good, I am gonna put a new gasket on and try it out tomarrow if its warped I should know and will be out only 30 bucks, my car has been outta commission for a few weeks and I need to drive it! I will keep ya imformed. I will take some pics tomarrow! my back is killing me and I got a full day of hanging over the car on a saturday yeah! There is a ton of vac. lines on the intake mani! I pulled my spare motor outta my parts car and am gonna put the cams outta there in my rides cause I heard 91 cams are better. I also prepped that block to go in jsut in case Everything goes sour tomarrow! I am crossing fingers!

[j-z]

cool man, good to hear its a $30 fix (hopefully). lol i feel your back pain! take your hood off if you havent already. that makes things alot easier and only takes 2 mins to do, and eases some of the pain. the reason the 91 (s13) cams are better than the s14 cams is because they have a lil bit more duration. s14 have 232 intake/232 exhaust while the s13 have 240 intake/248 exhaust. its a cheap upgrade for us s14 motor guys and can give a good 15 whp diff boosted. i went with these for my setup as well. just remember to stay outta boost till a tune, and dont boost more than 10 psi for reliability.

[1995240sxSE]

ok so I was way wrong!!!!!!!!!!!! I cant do enough exclaimation points. I decided since I had motor 1/2 torn down it wouldn't hurt to look at the the pistons and oh my what a nightmare. I get it all done and to my surprise RINGLANDS! Completly shot! just look at picture! Almost 1/2 the piston on 2 ringlands! Oh well I have a spare motor I will run in there when the new headgasket gets in on tuesday. I am only gonna run 8 psi on that motor! I am gonna order some pistons soon so that I can safely run 15+ psi! Thanks for everyones help and support!

p.s. 1.3 miles at 15+ psi can blow your $h!t UP!!!!

[1995240sxSE]

and these are the pisces that fell out!

[1995240sxSE]

Arent I lucky!!!!!!!!!!!!!!!!!

[dontbugme]

ok so I was way wrong!!!!!!!!!!!! I cant do enough exclaimation points. I decided since I had motor 1/2 torn down it wouldn't hurt to look at the the pistons and oh my what a nightmare. I get it all done and to my surprise RINGLANDS! Completly shot! just look at picture! Almost 1/2 the piston on 2 ringlands! Oh well I have a spare motor I will run in there when the new headgasket gets in on tuesday. I am only gonna run 8 psi on that motor! I am gonna order some pistons soon so that I can safely run 15+ psi! Thanks for everyones help and support!

p.s. 1.3 miles at 15+ psi can blow your $h!t UP!!!!

It's really too bad that so many people take advice from Internet sources and treat it as gospel. Half the people, if not more, regurgitate what they heard, have never rebuilt an engine or have ever taken the time to read or study the art of building a hi-performance engine and all that's involved or even have a drivers license!

Now that you've blown an engine, all the bench builders will come in with the buzz word or the day and claim, "Oh, man! It was the tune, you can run all day on 15 psi boost and stock internals!" What horse ****! More than doubling the stock output of any engine will require more than a good 'tune". It simple material science and physics.

Now you're talking about rebuilding, using stronger pistons. I'll give you a hint, you better beef up that bottom end while your at it or your going to be looking at another rebuild shortly.

Speed costs money, how fast do you want to go?

[fiznat]

I'll give you a hint...

Dude, who are you?? Thanks for the cherry picking "I told you so" post. I dont care how much experience you have, it doesnt do ANY good to come around here trying to look like the hot-shot who's all up to date on "material science and physics" after the fact.

We have plenty of good advice here. LOTS of people who have done this more than once, who have all kinds of experience building (and blowing up) these motors. I dont appreciate your generalisation of our membership, nor do I like your attitude. Take that high and mighty crap elsewhere.

It is WELL known that the stock KA is at it's absolute limit around 15 psi. We do have a few members currently running this setup, but any amount of research on the forums will show you that this isnt exactly the best idea. No secret there. That doesnt give you the right to shove it anyone's face though. We build motors, some of them blow up- you live and learn. Consider this lesson learned, "dontbugme," and let it go.

[S14tat]

hmmm then i guess me, nissanfanatic and orion should be very very blessed since ours have been making 300+whp for over a year.

but most of it has to depend on driver too. like i know my engine will probrably blow if i do a full 1 mile run. so i only do short 0-120 mph burst at 1 bar of boost, and orion only runs 12 psi when he goes auto x. and nissanfanatic, well hes a weird breed of KA cause his ran up to 31 psi stock internal and he trapped 122mph with his stock block with race gas, ARP head studs and stock paper headgasket.

so if thats a load of bs. when i guess we're just magical people. lol but i do understand what yoru saying though, whenever you more then doubling the hp on a engine your gonna expect something to break. some just breaks sooner then others. his broke in 1.3 miles, mine hasn't broken in 55K miles yet.

[1995240sxSE]

dang whats up with all the arguing! I just wanted a OHHHHH that is a gross piston! All of me messing with this turbo and the ka is just a learning expirence for me. I wanted to see if the motor could hang with that much power. I found out while pulling the block that the motor was a reman motor, and I think that It was done with some cheap internals. When that block is done I am gonna run 15 psi on the stock motor that is going in after the headgasket gets here just to see AGAIN! And dont bug me who cares. So you are an expert huh, how come fiz always posts good info and is always willing to offer advice! He was simply stating that with good tune it is possible to do 15 psi, but not in my case aparently! I am not too worried. She will be running soon, this time at 8 psi!

[j-z]

OH SNAP THAT PISTON LOOKS NASTY!!!!!!!!!!! lol i broke the ringlands on my stock lude motor at 8 psi, and that was from running too lean and too much timing which led to detonation. it was the cause of running untuned! please make sure to go get your car tuned before you boost on it. and you better up your injector size as well if youre gonna go up to 15 psi again. did you say you had your btm at -2 per psi?? thats ALOT! -.5 to -.8 would be a good setting.

[Edub1]

This is why I created the longevity study/survey below. Perhaps you would like to add your story and help keep the thread going. Eventually we will have a good picture of just how much abuse these motors can take.

zerothread?id=158338

[S14tat]

yeah i was thinkin when i saw your setup that 440's aren't going to cut it if your gonna run 15 psi on a T04E.

but if i was you, since the engine has to be rebuilt anywyas, i would rather put in some forged goodies instead of stock ones. it seems kinda pointless to spend money on a engine that might break just as fast again. but if you can do all the work yourself, then i envy you. i wish i have hand skills like that.

[1995240sxSE]

its a t304e hybrid btw... and I am not spending a dime on the other motor. But I am planning on building my block up in a month or 2, but I need to drive this car in the meantime. I think it should hold up for that long. I am planning on just getting some forged pistons. I think the stock rods should be good, but that might be another post. I have 440's as far as the injectors they should be good up to 300 hp. at 15 psi how much power would you say I was making, although I didnt have the safc tuned properly for that much boost. se la vi and you live and you learn!

[j-z]

i would def go up to 550s for 300 whp, or else youre just asking for it again. at 15 psi, depends on your setup, but i would say you were about 300 whp or a little more. reason so conservative is because you didnt have your shlt tuned!!!!!!!!! i hope alot of people are reading this thread and learn that you have go to tune your setups before you start dogging on it, or else this is exactly what will happen to you. good luck in the future because the way youre going about things youll def need it.

[1995240sxSE]

I dont really understand what you are talking about, I am gonna need the luck. because I am stickaing another stock motor in. OK I am gonna run like 8 psi until I get the money and time for some pistons! The stock rods are good for that psi and power so Why should I need luck.

[j-z]

because from your post it sounded like you were gonna boost 15 psi and try to make 300 whp on 440s on the second motor. thats why i said good luck. just remember no boosting till you get that bish tuned and youll be good at 8 psi with the 440s. but if youre gonna go more than that with the forged pistons i would def drop those injectors from something larger.

[Edub1]

safc II and msd 6btm set to 2 for initial run

What do you mean "set to 2"? You pulled 2 deg per Lb of boost or 2 deg all together. At 15Lbs you should be pulling 11.5 - 12 deg of timing. A colder plug doesn't hurt either.

[Edub1]

Just noticed the injectors. You have 440cc injectors and boosted a T04E to 20 psi.

There is your problem - you overshot your injectors by a mile. Probably had an A/F ratio of like 18:1

Even 15 psi at high RPM with that turbo is above the max range of those injectors. I believe they max at ~ 300HP

Combine that with too much timing and there you go. 10Lbs is going to be your max with those injectors.

[1995240sxSE]

I was not trying to boost that much my boost controller was wide open insted of all the way down, kinda a careless mistake huh. the msd 6 btm was set on level 2* per psiI had the safc set to what I needed for 10 psi all of these factors COULD have led to her demise.Head gasket will be in tomarrow and I am gonna finish the build and only run 8 psi until I buy the forged pistons and I guess rods, just so I dont blow them up next. My old block is good so I can build while i drive

[j-z]

you dont have to go that far on the btm. -2 was way too much retard. i wouldnt have even been messing with a boost controller right when you got done bolting everything on. i have a 4 psi spring in my tial and a 14 psi spring. the 4 psi spring is staying in there until the day i hit the dyno up, and after im done breaking my motor in without boosting. yup, ya live and learn.

[1995240sxSE]

i wasnt trying to mess with it I was trying to have it all the way closed so my wg spring was doing all the work but got confussed, head gasket came in yesterday, I got a hockey game tonight so I am gonna fisish build motor thursday and start installing fri, should be done sat morning... hopefully!