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happy to hear the car is running well!

what kind of power are you putting down on 10psi?

I would consider adding water methanol to stabilize the charge at higher compression.

On your setup, I would shy-away from E85 as (to do it right) you'll need a different tuning platform and more equipment/sensors to run it safely.

I would look into a different compressor wheel to push you higher into the 17-18psi and stop there ... that'll take you well into mid to high 500hp which is going to be the limit on an HR block - or I'd just be happy with 14psi (low to mid 500hp).

If you're itching to spend money look into a more aggressive cam shaft, return fuel system, dampening crank pulley, exhaust work, oil pump upgrades, and then look into lightening the car.

above this you're looking at a built block.

you probably mean blow off valve (not a waste-gate) and any of the big names will make a quality setup. I run a TIAL 50mm just like everyone and their brother. I bought my waste gates from JGS Turbo out of Oregon and I am pretty happy with them - they run a slightly different design than a traditional diaphragm design and they are pretty rare in the import scene (but have a great presence in the domestic realm) maybe take a look at his stuff??

 

@bealljk

what kind of power are you putting down on 10psi?

#Estimate power based on other similar cars my tuner has dyno'd is around 525whp.

I would consider adding water methanol to stabilize the charge at higher compression.

# I will check out options for a setup. TY

On your setup, I would shy-away from E85 as (to do it right) you'll need a different tuning platform and more equipment/sensors to run it safely.

#Can't Uprev be used safely with E85? I currently have a CJM fuel return system with ID 1050x injectors and an Aeromotive 340lph fuel pump. Just curious?

I would look into a different compressor wheel to push you higher into the 17-18psi and stop there ... that'll take you well into mid to high 500hp which is going to be the limit on an HR block - or I'd just be happy with 14psi (low to mid 500hp).

# I'm hoping 14psi will net me high 500's/600whp. The blower is good for 18 max psi with the correct pulley's.
I will get Dyno sheets this spring.
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If you're itching to spend money look into a more aggressive cam shaft, return fuel system, dampening crank pulley, exhaust work, oil pump upgrades, and then look into lightening the car.

#Been looking at additional mods. Thinking of definitely doing the dampening crank pulley and high flow cats. Also some Uprev GR Mafs.

above this you're looking at a built block.

#Planning on a built block winter of 2020/2021. 3.7 poor man's stroker with CP pistons and Carillo rods. Stock compression or a little higher.

you probably mean blow off valve (not a waste-gate) and any of the big names will make a quality setup. I run a TIAL 50mm just like everyone and their brother. I bought my waste gates from JGS Turbo out of Oregon and I am pretty happy with them - they run a slightly different design than a traditional diaphragm design and they are pretty rare in the import scene (but have a great presence in the domestic realm) maybe take a look at his stuff

#Actually I meant a waste gate setup for the excess boost I want to bleed off and control it with the boost controller. But instead of using the waste gate on the exhaust side I will add it to the intake side after the supercharger. I currently am using a Turbosmart 38mm bypass valve venting to the atmosphere for venting the boost at idle.

Thank you for your input! I will look into JGS turbo waste gates.

 

Right on … I would base your output off your setup … 525 is close enough. Uprev is sufficient to tune but to do it right you should have safe-guards in place - such as an ethanol sensor if you tune your engine to run on E85 and get a batch of E60 it'll ruin your weekend. Oil pressure, fuel pressure and coolant pressure are very good things to monitor on big-builds.

I speculate your 340lph will get you around 550hp to 575hp peak. It'd be wise and for how inexpensive a 485 / 525lph pump is, I would consider it.

I don't think 14psi is going to make more than low 500s … I say this bc the supercharger is going to rob power off the top … especially at higher RPMs and higher HP … hopefully Oldman Z will chime in - he is very smart on these units.

Cool on the built block

I'm still confused on waste gate vs. BOV? why would you put a waste gate? would you keep a traditional waste gate spring? It would never open to vent? Your venting bypass is acting as a blow-off valve right now isn't it? I'm confused? Have other done this??

Great thread thus far!

any pictures? Video? of the car running?

 

The bypass valve/blow off valve is venting the boost at idle. I currently have a -18inhg/-20inhg spring in it. When I'm on the throttle it will close and anytime I let off it will open due to the vacuum.But with the waste gate I will use a 7 or 10lb spring which will vent the excess boost while the boost goes over the desired pressure. Just like a turbo car won't over boost. The waste gate will open up to keep the correct pressure. If I need to change the desired boost I will adjust it with a boost controller. Say if I had a map for 93 pump for 10-12 psi but if I was using E85 or race gas I could do 12-14psi.

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Good example of what I'm looking to do is in this article.

​​​http://www.superchevy.com/how-to/eng...ger-wastegate/


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New 2.5 in pulley and the old 2.87in.

Purchased from supercharger rebuilders from eBay. Measurements 2.5 in diameter 27.35mm width and 20mm bore.

Additional belt idler to add a little more tension with the smaller pulley.

 

I think I got ya now ... you may have to experiment with springs ... but an 8psi waste gate spring is approximate and is the amount of exhaust pressure which produces 8psi of pressure in the intake manifold (not the exhaust manifold) ... In reality, the 8spi spring in the waste gate is significantly stiffer than 8psi spring used in a BOV.

I'm not saying dont do this (as it's your car) but you may find it easier to use the boost controller on your existing BOV. Your boost controller works to manipulate the pressure (created from boost) that the BOV sees ... and you can program the boost controller to open at 8psi / 10psi / 14psi / 18psi depending on the situation.

But, give 'em hell!!

 

I definitely will! I have about 4 months to experiment till the Z is out again for spring.

 

Had to cut the cut pod to accept the new 60mm eboost2

Old AEM boost gauge and the new Turbosmart eboost2 boost gauge and controller.

 

Sweet / nice goodies ... Santa came early?

I bet you can do all your boost control from that boost controller... does it connect to a provided solenoid? or do you have to buy one?

 

You could say that lol. That's what I was hoping it will do plus more. It's surprising how small of gauge this thing is but what it can do is amazing. It did come with a 3 port solenoid just have to wire it up.

 

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Nice!

how many psi are you pulling?

did you tinker with the boost controller?

 

In the video I probably only hit 6 or so was doing a light pull for a buddy lol. I haven't had a chance to get the car back out since the pulley swap. I really don't want it to see salt. They salt the roads to death here. Haven't gotten a chance to mess with the boost controller. I hopefully will soon.

The eboost2 is pretty bad *** I was reading it can control water/methanol spray and nitrous along with the boost gauge and controller. So I think I probably will be adding a water/methanol kit and let the eboost2 control it.
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Turbosmart Hypergate 45mm wastegate.

One piece 2.5 in SS pipe for the Turbosmart 45mm wastegate with 7lb spring and the Turbosmart 38mm bypass valve dumping to atmosphere.

 

Blown out right side cat. 23k original miles.

OBX dual resonated test pipes. Its actually quieter than the stock blown out cats.

 

Innovate ECF-1 gauge.

Wideband/fuel pressure/ethanol & fuel temp sensor.