Advice on procharger build.
Advice on procharger build. Hey guys I have my 355 lt1 running a p1sc at 8psi right now and am planning on turning it up this winter to 10-12psi.. Ill tell you what i would like to do this winter and any advice or input would be great to hear before i start compiling parts. What have you seen work well for these setups? Lastly keep in mind the car is setup to handle 8psi safely right now..(i.e fuel system,heads,intake,exhaust, etc...) Going standalone btw...pump gas..
This is what i have so far that i think will keep me safe on 10-12lbs..
- Front mount intercooler or dual intercooler???
- Megasquirt 3
- AEM wideband controller
- Alki meth injection
Anybody use this combo?? different combo?? overkill?? anything else i should get?? input is appreciated thanks guys enjoy your holidays!!
This is what i have so far that i think will keep me safe on 10-12lbs..
- Front mount intercooler or dual intercooler???
- Megasquirt 3
- AEM wideband controller
- Alki meth injection
Anybody use this combo?? different combo?? overkill?? anything else i should get?? input is appreciated thanks guys enjoy your holidays!!
sorry gentleman...the shortblock has scat forged h-beams mahle pistons steel oem crank compression is around 11:1....heads are advanced induction 200cc and intake is fully ported by a.i as well. tuned on 93 octane...rings gapped if i remember correctly .026 primary and .024 secondary...
11:1 and boost don't mix. You could put a fat head gasket on and your quench goes to ****, or you could sell the AI200s and get something with a bigger chamber. Bottom end is plenty stout, but you need to drop compression, I would do it with bigger chamber heads. Someone else can chime in if the ring gaps are wide enough for boost, if not you could do a slight dish and a rebalance and keep the AI200s.
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im currently running the single intercooler from procharger which isnt good for anything really...the reason for the intercooler and meth is because im running with more compression than id like for the amount of boost. trying to reduce as as much detonation as i can with a lot of meth and a good intercooler setup. Im beyond pulling the block apart i dont have the time. my goals arent for 700hp so im hoping for a conservative tune on 10lbs...also i didnt build the motor for boost it was originally intended to handle a 100 shot or so of nitrous but i landed on the procharger kit for $1200 and now im trying to make it work...the motor pulled great never missed a beat on 8lbs of boost on pump gas all summer so is it not realistic that on 10lbs with meth, bigger intercooler, standalone, couple stages of meth, and a good tune to run another summer or two??
If you have a sub standard core FMIC upgrade that, a nice 4inch would work if you can fit it.
Make sure you have enough fuel for this and then add in a couple more meth nozzles.
How much are you spraying now?
Whats the system trigger on/off at?
Mixed spray, or straight M1?
Do you know if you rely on the meth for fuel or are you free of detonation at the moment and meth is backup/IAT cooling?
Whats the fuel system composed of at the moment?
If you work with a decent tuner on a load bearing dyno and set boost then start adding in timing you can safely find the limit and evaluate how much you wanna risk.
Make sure you have enough fuel for this and then add in a couple more meth nozzles.
How much are you spraying now?
Whats the system trigger on/off at?
Mixed spray, or straight M1?
Do you know if you rely on the meth for fuel or are you free of detonation at the moment and meth is backup/IAT cooling?
Whats the fuel system composed of at the moment?
If you work with a decent tuner on a load bearing dyno and set boost then start adding in timing you can safely find the limit and evaluate how much you wanna risk.
- Im planning on fitting a 4in front mount i can fab the plumbing my buddy is going to assist with the welding..not sure what intercooler to go with tho..
- putting 60lb injectors in and should be fine with the single 255 in tank setup from what ive researched..i have the racetronix 255 in tank setup now with 42lb injectors.
- not spraying any meth as of right now...that being said with the megasquirt i can control the timing of the spray with dual nozzle setup for sure..should i go straight m1 or run a mix??
- no detonation that i know of but the main goal is to lower IATs as much as possible yes..ive been speaking with my tuner he seems more than confident in tuning safely with a good wideband controller and the megasquirt 3...
- putting 60lb injectors in and should be fine with the single 255 in tank setup from what ive researched..i have the racetronix 255 in tank setup now with 42lb injectors.
- not spraying any meth as of right now...that being said with the megasquirt i can control the timing of the spray with dual nozzle setup for sure..should i go straight m1 or run a mix??
- no detonation that i know of but the main goal is to lower IATs as much as possible yes..ive been speaking with my tuner he seems more than confident in tuning safely with a good wideband controller and the megasquirt 3...
- Im planning on fitting a 4in front mount i can fab the plumbing my buddy is going to assist with the welding..not sure what intercooler to go with tho..
- putting 60lb injectors in and should be fine with the single 255 in tank setup from what ive researched..i have the racetronix 255 in tank setup now with 42lb injectors.
- not spraying any meth as of right now...that being said with the megasquirt i can control the timing of the spray with dual nozzle setup for sure..should i go straight m1 or run a mix??
- no detonation that i know of but the main goal is to lower IATs as much as possible yes..ive been speaking with my tuner he seems more than confident in tuning safely with a good wideband controller and the megasquirt 3...
- putting 60lb injectors in and should be fine with the single 255 in tank setup from what ive researched..i have the racetronix 255 in tank setup now with 42lb injectors.
- not spraying any meth as of right now...that being said with the megasquirt i can control the timing of the spray with dual nozzle setup for sure..should i go straight m1 or run a mix??
- no detonation that i know of but the main goal is to lower IATs as much as possible yes..ive been speaking with my tuner he seems more than confident in tuning safely with a good wideband controller and the megasquirt 3...
-I would get 80# sticks, it will let you get away with a smaller fuel pump. I would be very very apprehensive to run a single 255 on 10psi and that much SCR 355ci motor.
-I am not all to versed in MS stuff, but I would assume you can ramp it in and out fairly well. I would run straight M1 if you can source it local and are comfortable spending the money to setup a system that is made for straight meth. It will give you the most octane bandaid and should help with that.
-IAT wise, you shouldn't be terribly worried, the SCR and pump gas will be the cause of knocks more than anything IMO. Start heavy with meth and low on timing. Meth will play all sorts of hell with your W/B so get things set up prior to dumping in meth, with the amount you will prob need you will drop at least one or two points AFR wise.
Just be careful and don't get greedy, slowly work up on where the motor is happy timing wise.
OR, wrench in the mix, wastegate it.
Thanks for the input and i know im playing with fire here..
- Have you heard anything about the cx racing intercoolers they are pretty reasonably priced but not sure about the quality..Any other budget friendly intercoolers??
- My tuner suggested the alki kit for straight meth said the pumps hold up well without mixing with water...
- also using a factory fuel pressure regulator...should i get an aftermarket one at this point?
Another question...surge valve? i have the one procharger supplies with the flappy valve haha should i go big red or what because im gunna need to mount that accordingly when i make the plumbing.. you mentioned a wastegate? how would that work?
- Have you heard anything about the cx racing intercoolers they are pretty reasonably priced but not sure about the quality..Any other budget friendly intercoolers??
- My tuner suggested the alki kit for straight meth said the pumps hold up well without mixing with water...
- also using a factory fuel pressure regulator...should i get an aftermarket one at this point?
Another question...surge valve? i have the one procharger supplies with the flappy valve haha should i go big red or what because im gunna need to mount that accordingly when i make the plumbing.. you mentioned a wastegate? how would that work?
Thanks for the input and i know im playing with fire here..
- Have you heard anything about the cx racing intercoolers they are pretty reasonably priced but not sure about the quality..Any other budget friendly intercoolers??
- My tuner suggested the alki kit for straight meth said the pumps hold up well without mixing with water...
- also using a factory fuel pressure regulator...should i get an aftermarket one at this point?
Another question...surge valve? i have the one procharger supplies with the flappy valve haha should i go big red or what because im gunna need to mount that accordingly when i make the plumbing.. you mentioned a wastegate? how would that work?
- Have you heard anything about the cx racing intercoolers they are pretty reasonably priced but not sure about the quality..Any other budget friendly intercoolers??
- My tuner suggested the alki kit for straight meth said the pumps hold up well without mixing with water...
- also using a factory fuel pressure regulator...should i get an aftermarket one at this point?
Another question...surge valve? i have the one procharger supplies with the flappy valve haha should i go big red or what because im gunna need to mount that accordingly when i make the plumbing.. you mentioned a wastegate? how would that work?
Whichever kit you get just make sure the pumps,lines and tanks are rated for straight meth. It will slowly leak out of the cheaper pusk lok hard plastic stuff.
Factory regulator will work fine as long as its operating correctly and rising fuel pressure with boost.
I have no experience with the big red valve, I run a JGS 60mm BOV but again, I am turbo. I mentioned wastegate cause you could use it on the cold side to pulley your head unit to say 10psi but bleed off some at your control via the wastegate. Its complicated but it gets you the ability to control boost dynamically vs straight linear RPM wise.
The ring gap looks fine for FI.
I'm guessing you're talking about the forged Mahle Powerpak pistons. They should be fine for moderate boost. I would be more worried about the plasma moly coating coming off of the top ring if you detonate.
Do you have any idea what the thickness of your current headgasket is? Head chamber size? If there's any way for you to drop compression without swapping pistons/heads then do it. The AI's you listed go from 52-56cc... a 4cc difference is about 0.5 comp. If your current chambers can be opened up then send them back to AI. As for the HG, going from a 0.026 Impala head gasket to a 0.060 Cometic is a 1.0 comp difference. Don't know what your setup is right now, but a drop to 9.5:1 could be possible.
Quench is not as important for a fuel injected car so I would not worry about it at all with FI. If anything, less quench would be beneficial and decrease chance of detonating.
I'm guessing you're talking about the forged Mahle Powerpak pistons. They should be fine for moderate boost. I would be more worried about the plasma moly coating coming off of the top ring if you detonate.
Do you have any idea what the thickness of your current headgasket is? Head chamber size? If there's any way for you to drop compression without swapping pistons/heads then do it. The AI's you listed go from 52-56cc... a 4cc difference is about 0.5 comp. If your current chambers can be opened up then send them back to AI. As for the HG, going from a 0.026 Impala head gasket to a 0.060 Cometic is a 1.0 comp difference. Don't know what your setup is right now, but a drop to 9.5:1 could be possible.
Quench is not as important for a fuel injected car so I would not worry about it at all with FI. If anything, less quench would be beneficial and decrease chance of detonating.
Last edited by Catmaigne; Dec 18, 2015 at 06:01 PM.