If i run a different crank pulley could i drop off some boost. Would i run a bigger or smaller crank pulley? Also would it get me boost earlier? or would it make it later? any bad things about a bigger crank pulley? Right now I bhave a 7.25. What do you guys think.I already have a 4.25 blower pulley. I hit 10 lbs of boost high end.

 

Hi Nick,
best way to go about this is too keep your foot out of it...serious.
With the SDCE set up we are bascially maxed on how big our crank pulley is, any bigger and the belt would start hitting other things due to how its routed. I asked this early on in the game when I had the MMS 6 rib crank pulley(7.8xx) and wanted to utilize it with the SDCE set up. SDCE rightly pointed out that the belt would not clear.
So shift early and keep it together that way...real easy with a 6 speed
J

FWIW I ran 12 psi on my stock 98 block for about 40 thousand...9 psi with a 50hp dry shot too towards the end with no venting of the block...in fact its still sitting intact in the garage right now....its all in the tuning with FI and longetivity...and respect don't get out of hand, you know what you're limited by now, stock internals

 

Yea, I see no need to pulley down unless your fuel isn't keeping up......

 

it is keeping up. I am just in too deep to have the blower go

 

that blower is rated to alot mor power than you can put out. the d1 is rated by ati for 900+. congrats on your new machine by the way. how different does it feel Im gettin the same on soon but with the twins.

 

oops i meant engine. Man i drank to juch

 

Well if the tune is good, then the engine will be fine......

I would make sure the AFR is at least 11:1.........thats where mine is w/my forged motor, with right over 20 degrees of timing.....

if you are 12:1, that means you are close to 12:1 on the street......

 

I would set your rev limiter back to stock 6K RPM.... and another way is to loosen up the tension on the SDCE kit and see if you can get the belt to slip some....... if the belt is allowed to slip up top (meaning high RPM) then you will not see 10 psi..... le idea with the SDCE kit is for the belt not to slip.... thats just my .02
Kyle

 

So what happens when the PCM starts pulling fuel under boost? Or does it just pull timing on the limiter?

SC-

 

yeah, For the limitied amount of cars i will actually have to take the engine that high in rpms i dont think i need to worry big time. I hope to have a cam in, by march. That should be able to get rid of some boost correct?

 

Your right..... i do believe fuel is pulled when you bounce off the rev lim... and under boost that would be bad.


Nick,

A cam will help the motor flow better ie dropping boost a bit but you should pick up some more power also...... then your 42# Injectors will be close to maxing out.......... How long till you do a cam??
Kyle

 

Kyle,
I will get the cam............. Once i get money. Story of my life. the 42#'s are maxed out right now. So I will have to do 60#'s the springs, retainers, oil pump, timing chain. RevXtreme, told me that they have a good blower cam they use on a lot of cars. It was I think a 224/228 0 overlap 113. Do you think a 224/230 114 cam would be better?

 

How much of the Ol cam sound do you want??? My 230/236 thats in there now sounds awsome on a 114LSA
Its a Comp XER 230/236 .598/.608 on a 114+4 LSA
On stock cubes how about a 226/232 .580ish/.590ish on a 114+4. Im a big fan of a 6 degree split. Make sure you buy double springs when you do. If it will fit in your car ill sell ya mine here in a bit if its doenst work well with the turbo ( i highley doubt it works well) Ill give ya a good deal... we just have to make sure you have enough piston to valve clearence.... i never checked on mine but im pretty sure with my -15cc dish im ok Ill make soem phone calls and find out.
Kyle

 

Drop the rev limiter or take a bunch of timing out above a certain rpm.

 

Yep, shift early 5800-6000 add fuel and take out timing(said that in your dynograph post) and you should be fine. Looks like they have your car set on "kill" with a max HP/TQ tune. Calm it down a lil for the street and you will be all good until the funds come up to start digging into the motor. If you are going to cam it, i'd say go with a cam that purposely bleeds off some boost until you can afford to add some forged pieces in there. Gosh I wish I had your problem of making too much power That rocks

 

What are the stock LS1 damper sizes?
Are they the same for the F-Body and Y-Body?
Can't remember if it's 7.365" or 7.5".

 

You do Big dog...... 15-16 psi thru that forged 348..... when you gunna dyno that thing and let us know what it makes.... i know you got enough Hp for a 10...... Hey BTW that was in fun back at ya..... No hard feelings at all bro.
Kyle

 

I just want another engine. Maybe I should get some HP tuners to just take some timing and add some fuel? Or should i just wait till I get the cam and have them take more timing out and more fuel.

 

sent you a pm...
I have the support brace ready to ship...please call me when you have a sec!

wendy