i put the s13 exhaust cams in my s14 using the 4 teeth method. question.

[EstoMax]

hey guys,

i successfully installed 2 248 degree s13 exhaust cams in my 95 240 and i read a lot about it b4.

i read that the intake cam will be 2.7 degrees retarded, what exactly does this mean? i understand it opens 2.7 degrees later than it would stock? what kind of effects will this have on the performance etc?

TIA

max

[chandler]

bump , I want to know also, what about the shims man, what did you do to yours for that>?

[EstoMax]

yea the shims.. umm.. i didnt even find them really.. i couldnt find my measuring tool for that purpose so i said **** it and forgot about them

are the shims on the valves? the little metal round plates, cause i couldnt get those off, not that i tried really hard or anything..

i think 95% of the time you wont have to worry about the shims..i havent heard of anyone having problems with them

Max

[:: orion ::]

95% of the time you wont have to worry about the shims...

Make that 98%...

The base lobe of stock cams are typically so close in size that shims aren't necessary.

And the shims are dirctly under the cam lobes...the metal discs you see. They kinda stick in place with suction, but can be removed with a tiny screwdriver or magnet.

And it's 2.7 degrees retarded b/c the valve is fully open 2.7 degrees later now...this increases overlap and helps scavenging...good for N/A.

- Brian

[EstoMax]

sweet..

hmm.. so if i put fatter shims over there, wouldnt that theoretically give me bigger valve lift?



max

[Smurf6x6]

So you just retarded the exhaust cam your using for the intake 4 teeth from where the mark is sopposed to be? because my S13 with 2 exhaust cams won't start.

[corn322]

yeah, it would, but if you don't mill the cams down your valves will be open all the time

deja vu

[ShionS14]

i have a question, i understand advance and retarding timing using the teeth but which one rotates which way, i.e. the intake cam if you are retarding it four teeth do you rotate it clockwise or counterclockwise?

[BadMojo]

And the shims are dirctly under the cam lobes...the metal discs you see. They kinda stick in place with suction, but can be removed with a tiny screwdriver or magnet.

I mentioned this to Greg in another thread, but that's the one reason I'm reluctant to do some aftermarket cams (JWT or PDM cams). I'd feel compelled to check my valve lash, which in and of itself is tedious. If one or more of those suckers is out of spec, those little bastards are really expensive. I can't believe how much Nissan charges for a small metal disk.

Would you agree that it's probably wise to check valve lash if you're doing cams anyway? I know JWT recommends it, but I don't know if that's overkill.

If it were you, would you check lash, Brian?

[driftaholic]

i'm running with 2 exhaust cams, intake side rotated 4 teeth ccw, didn't change shims, starts with no problem, idles like a built V8

[AZhitman]

Mine's still slow.

[j-z]

so how do you guys like the 2 exhaust cams?? yall need to show me what you went by when installing them and exactly how you marked for the intake cam to be in the correct position. i scored one cam! one down, one to go

[absolute]

so is this the same as running one of the sohc cams and a de cam? or is that something totally different

[driftaholic]

ummm sohc cams are way too different. 3 lobes per cylinder

[InsanityInc]

well, and one cam drives all 4 cylinders, and it uses rockers...

[98s14inaz]

Mine's still slow.

That is because of the design. On the s14 we got small cams and larger mafs. On the s13 you got larger cams, smaller mafs. Once you go turbo and open things up with a cobra or z32 mafs you will feel a huge difference. In fact there is a guy on here that posted a dyno run for 97 kat 218whp with an auto @ 7psi. Just keep working on it. Also the stock ecu tuning is way conservative. JWT fixed that on my car.

[absolute]

so what would be the largest maf that we could run on our cars?

[98s14inaz]

so what would be the largest maf that we could run on our cars?

Well Mike Lee has tested a new JWT prototype KAT program consisting of a ford lightning maf and 96Lb injectors. 535whp. I think the mafs if around 5 " in diameter.