My plans at first where to stroked the engine to a 3.5, I have all the parts to get the motor stroke, but i came across on a good as deal on a complete supercharger an i bought it. The only thing im concern bout its that if i stroke the engine, idk if I would be able to run the superharger on 3 pounds without harming it. I seen that i could run a 6 pound pulley on a stock motor but im not sure if i would have to do anything else to the motor ? Any help would be appreciated. Thanks

 

You can just check compression
Check out this video on YouTube:



Sent from my iPhone

 

you can stroke it, just lower the compression on the motor so it can handle higher boost. i dunno what the proper ration of boost vs compression is... i'm sure there's a way to calculate the best thing to do. but a stroked s/c would be a MUTANT of a beast.. do it!!!! u lucky

 

I don't know if the comptech supercharger can push enough air on a 3.5. You would be better to go to M90. A 3.5 can handle boost fine, but the charger would be too small I think. It would be like an undersized turbo

 

Yeah i was talking to a friend of mines an told me i would have to get a bigger charger, cause it wont handle it...but if i run a 6 pound pulley on a 3.2 would i have to change anything on the motor or ecu ?

 

The 3.5 tls uses the same m62 . & watch all the vids
Check out this video on YouTube:



Sent from my iPhone

 

its either keep it 3.2 and supercharge it or build 3.5, 3.6 which is more reliable and you dont really need to tune it

for 3.5 mp62 is definitely not enough you will see max 2-3psi on the HBP

boost you have to get it tuned to run it safe but basicly nobody can do it or its almost impossible to find someone to tune it... with stroker you should be fine without the tune

 

What is this, I dont even....

It cant. A properly built 3.5 with an M62 blower with a 3psi pulley will struggle to hit 1.5psi. The M62 can barely move enough air efficiently on the 3.2l.

Youll need to address the fuel system and get a tune.

That blower is running out of its efficiency range on the 3.5l. Most of that air is hot, which isnt amounting to as much power as there should be on that psi rating.



A stroker with stock intake will put down lbp numbers, and the AFRs will still be in check. My fuel map was perfect before I opened the intake and exhaust further. Now Im losing a good amount of power because of how rich Im running. Nonetheless, Im making hbp numbers now.

 

I think some of these opinions are misconstrued. It all depends on your power goals. A blower + 3.5 will produce more numbers than a 3.5 alone or blower alone. The mp90, as much as its been suggested has not been implemented in the CL as often as folks say its more efficient. The mp62 is proven in the numbers it provides. 3.2 or not. You can always slap a smaller pulley on it and produce more numbers, you just have to ensure its tuned and cooled properly. This whole efficiency discussion is relative dependent upon your goals. People say the mp62 isn't efficient all day but whats not efficient about a 50 whp gain? And if you go with the max boost pulley its more. At that point I don't care about efficiency. And that's before a tune and on an oem clutch. I just care about numbers without having to go the custom mp90 route.

 

If we want to talk numbers, a J30 running an M90 at 8psi put down high 300s at the wheels. An M90'd 3.6l put down mid 400s at ~7psi, IIRC.

A 50whp gain is great, but the inefficiency comes from how it gets that. It requires 6psi of boost, and that air is very hot since the MP62, at 6psi, is spinning out of its recommended rpm range. IIRC anything above 13,000rpms is out of the efficiency range, where the air gets heated due to the friction in the blower itself. If memory serves me correctly, an MP62 with a 6psi pulley is spinning at 16,000rpms.

The J series loves to breath. More air = more power. The MP62 can only provide so much air

 

I guess what I was driving at is the MP90 isn't readily available/swappable without a few customizations (brackets, etc), but correct me if I'm wrong. I'm pretty sure there are more 62's than 90's running around this board. If someone's power goals are 350+ whp then sure, the MP90 would be the ideal route, albeit a custom route, to go since it has a higher ceiling.
The air entering the intake is going to be hot regardless. Maybe less hot than running a 6psi pulley on the MP62 than say a 3psi pulley on the MP90 but it depends on the build to determine which one is worth it. The MP90 may push more air on a 3.2 and 3.5 but the OP has to decide it he just wants to throw a $1500 MP62 on the engine and swap pulleys or pay a little more for the bigger unit and be willing to customize the MP90 to fit.

 

you can buy the full M90 setup with the option of doing an air/water intercooler now. Paul will make the M90 setup and has done several kits. I'd love to do a 3.5 with M90 down the road.

 

Sweet. Didn't know that. How much is it compared to the MP62?

 

You'd have to check with Paul to confirm, but i priced it out a while ago out of curiosity and with no cooling you're looking at around $3,500. That's buying a used M90, rebuilding it, the core s/c kit, rdx injectors, CAI, FIC w/ harness, FPR and a walboro. There's a thread with his pricing on the "other" site. He can do differnt pullies for whatever PSI you want to run.

 

Yea, the price difference isnt much different, and in some cases, the M90 is cheaper.

 

whats his username ? i need some pulley made for my supercharger lmk thanks

 

NVA-AV6, he doesnt post much on here though.