Stage 2 sc build has begun

kentmo280z

Well, Instead of waiting on Gamma to get around to doing something, I ordered a 90mm 7 rib pulley from Kraftwerks ( There's a story with that sale also...) and I took the incorrect MAF pipe , reshaped and had it welded to fit my application. I also ended up painting the pipes with black wrinkle paint.
I have an 84mm pulley from the Stage 1 kit but am not looking to over stress my internals .

tiller

Ok sounds like things are moving along for you.
I purchased my 85mm from kraftwerks also,great prices.
Jinxx has been running the 85mm with no issues , good fuel setup and tune and these motors can handle 12lbs all day long, I think 84mm pulley might over spin the rotrex unit.

Jinxx

I haven't had any issues with my 85mm pulley which is 12lbs .. I did upgrade the fuel to the return system. My car is also a daily driver about 18k miles and supercharger has been installed since 1500 miles. The 85mm does over spin the supercharger a little at 7.5k rpm and is almost a perfect match at 7k rpm ... I rather max out at 7k and not redline the car ... some chose to run to redline to max out the supercharger. The perfect match would be the 88mm ... that should max the supercharger out about 7.5k Rpms ... IMO.. anything over 88mm is wasting supercharger potential.

Jinxx

Tiller have you upgraded to the 85mm yet

tiller

Yes I hav the 85mm and it will be going on this upcoming summer along with other mods, waiting on Charles from DJ for fuel system,plus I will be running 110 race fuel

shadow85

So if I want to stay around 10 psi, do I use the 88mm pulley from Gamma?

tiller

Yes I believe the 88mm is 10lbs approx

fryzia23

Kentmo, the turbosmart bpv gets loud when off throttle. There's no real way to quiet it down. It turns heads and can scare the crap out of people! The spring tightness does not really matter, at least did not feel any real difference. I try to keep at medium tightness most of the time. The biggest issue with turbosmart bpv I've had is that the piston inside gets dirty, dry and eventually gets stuck or leaking boost when full throttle. Even once a month cleaning and lubing did not help. So after my last track day and very leaky bpv I decided to try something different. It took me 6 months of waiting to finally receive the synapse diverter valve. I haven't gotten a chance to install it yet. Also haven't been driving the car due to winter so I am not in real rush plus need to cut off and weld on new flange for the synapse diverter valve.

kentmo280z

I also have the Synapse diverter valve and that one wheezes..lol
I might get creative, fabricate a pipe and plumb the valve back into the intake.
There is definitely room to run some 1.25" or 1.5" silicone /aluminum pipe from the valve to the intake. Weld on a 1.25"/1.5" flange to the intake.
That would quiet things down considerably.
Someone tell me why this should not be done.

theDreamer

Trying to make sure I understand, does it sort of sound like a rattlesnake?

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tiller

Lol ,yes I never thought of it like that but it does sound like a rattlesnake

Cj Motorsports shipped my s1e return kit and tophat, looking forward to the install and next stages of parts for my car

Jinxx

I use the turbosmart valve that came with the kit ... and tighten just a turn past the rubber o-ring ...very little if any flutter and then it's at a very low rpm if it does. I did have issues with it sticking for the first 10k miles but each time it did I took it apart for cleaning and re polished the brass piston now it seems to never stick anymore .... knock on wood ..as far as loudness ..... it is very loud and very noticeable .... if got want to make it quieter you could attach a hose from the bpvand route it further down the car ... but for me I love the sounds and loudness of it ...can't really hide the whine of the supercharge so with out the bpv sound it would just sound weird to me

Jinxx

Time to change the air filter .... what a pain in the *** lol

tiller

Oh ya it's in a brutal spot

I invested in a maxjax hoist for my garage last august,best investment ever, whish I woulda had it when I was installing the kit last winter.

Where did you get the replacement filter from?

Also I installed the 85mm on the weekend

Jinxx

Haven't replaced it yet ... was hoping on a different style or a smaller filter for that spot ... I'll have to get it out to compare ...... can you feel the difference from the pulley change ?