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Refresh951's Hybrid Ultra Stroker Build

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Old 11-06-2012, 12:07 AM
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refresh951
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Default Refresh951's Hybrid Ultra Stroker Build

I have been driving my 2.85L Hybrid Stoker now for a couple months (about 1200 miles). This motor is based on Blown944's design and I have been very happy with the results. Once again I must thank Sid for his help throughout the process. I believe there are a number of builds in the works based on his design. Dave Lindsey even told me they are working on an offset grind motor. I learned a great deal during my build and I have been thinking about what the motor could do with a few modifications.

Saturday night I took the 951 out for a VERY spirited final run before putting it away for the winter . Really no reason to change anything, the car is very quick with 410 whp and a very solid power band but I keep thinking about what it could do, so here we go...

I have purchased all parts to build a 3.15L (except the turbo) and started pulling my motor tonight. I will essential re-use much of my 2.85L including the block, change the pistons, change the crank, and change the turbo. This will also allow me to tear down the 2.85L and inspect for any design issues. I plan to have everything done by March 1st.

I have some new goals for the build:

- 550 rwhp/500+ ftlbs torque at 6300rpm, E85, 20-22psi
- 1 bar at 3200rpm bottom end performance
- Total cost for changes under $3260 for everything including new turbo

- Using 86 Block, dry sleeved, bored to just over 102mm, half filled (re-used)
- JE Small Block Chevy Pistons, Forged 4032
- Eagle 150mm Mitsubishi Rods (re-used)
- 3L crank, offset grind, 95mm stroke, cross drilled
- Compression Ratio is 8.3:1
- ARP Head Studs (re-used)
- Cometic Head Gasket (re-used)
- ACL Race Rod Bearings (Coated)
- OEM Main Bearings (re-used)
- Crank Scrapper (re-used)
- Modified Stock Intake, Ported, Honed (re-used)
- BMW Throttle Body
- Stock Cam, Stock Headers, Stock Intercooler
- High Flow Ported 8 Valve Head, 47mm intake valves (re-used)
- GT3582R Turbo (1.06 A/R, T3), this still may change
- Non-Interference Design
- Self Fabricated 3" Exhaust, 3" Down Pipe, V-Band
- MoCal Oil Cooler (re-used)
- s2 Harmonic Balancer
- Rogue Modified M Tune

Last edited by refresh951; 01-27-2013 at 12:32 AM.
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Old 11-06-2012, 12:21 AM
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1.06 will be to big for the spool characteristics IMO. make a custom twin scroll X-over if you want to get the most out if the turbo with a twin scroll housing.
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Old 11-06-2012, 12:26 AM
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refresh951
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Originally Posted by Paulyy View Post
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1.06 will be to big for the spool characteristics IMO. make a custom twin scroll X-over if you want to get the most out if the turbo with a twin scroll housing.
I know it will be difficult, still working on that part of the build. Looks like you can get 1.06 A/R in a T3 turbine housing. Still researching options.
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Old 11-06-2012, 12:50 AM
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Originally Posted by robstah View Post
The mod bug REALLY bit you hard, didn't it?
Having too much fun to stop I guess. Just an excuse to hang out in the garage.
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Old 11-06-2012, 01:43 AM
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Going full out on the stroke eh? Measure twice on the cradle etc. iirc it's possible.

I'd just get a new cometic. Why risk that?

Gonna make some f'n torque!!!

Can't wait.
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Old 11-06-2012, 03:32 AM
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Not too hard to find a better turbo than the GT3582
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Old 11-06-2012, 05:13 AM
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I doubt the stock cam will give a GT35 enough room to breathe as much as it could past 5500 rpm.

Looking forward to following this build.
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Old 11-06-2012, 09:14 AM
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refresh951
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Originally Posted by blown 944 View Post
Going full out on the stroke eh? Measure twice on the cradle etc. iirc it's possible.

I'd just get a new cometic. Why risk that?

Gonna make some f'n torque!!!

Can't wait.
Kind of needed the stroke the way things worked out. I really plan on taking my time on this. Good point about the MLS, for $100 I am sure it is wise to go ahead and replace it.
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Old 11-06-2012, 09:16 AM
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Originally Posted by Thom View Post
I doubt the stock cam will give a GT35 enough room to breathe as much as it could past 5500 rpm.

Looking forward to following this build.
Cam and intercooler are pretty easy to change out if I do not meet my goals.
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Old 11-06-2012, 10:59 AM
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Buy your wife a very nice Christmas present.
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Old 11-06-2012, 11:17 AM
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You'll want to put a cam in it, you'll probably wouldn't even notice any bottom end loss..
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Old 11-06-2012, 12:18 PM
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Do you want to sell the old crank?
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Old 11-06-2012, 02:43 PM
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Originally Posted by Adonay View Post
Do you want to sell the old crank?
I believe I sold the crank, if that changes I will let you know. I will also be selling my TO4E. That again may also be sold.
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Old 11-12-2012, 08:45 PM
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S2 crank arrived today. Everything looked great. I cannot believe I got this crank with an S2 harmonic balancer delivered for $492. Tomorrow it is going to the machine shop for offset grind.


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Old 11-12-2012, 08:58 PM
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Thinking about doing one of these instead of switching to a smaller turbo..
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