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11:1 CR Race/Street Engine build
As many of you may know, I am putting together a race/street engine for Dan Nall/ Shotgunslade's SVX.
Particulars: 11:1 Supertech Pistons from LAN Eagle H-beam rods ACL Bearings Polished crank Web Cams weld/grind w/ custom profile specifically for this engine Brian Crower coated SS intake&exhaust valves Brian Crower upgraded springs w/ titanium retainers RallyBob ported cylinder heads Equal length headers Tomyx intake 200mm HKS Mega Flow Element Hydra Nemesis w/ custom tune 740cc Injectors (poss. running race fuel/ E85 for track days) Walbro 255lph fuel pump Cometic HG's ARP head studs & fasteners Remote mount electric water pump w/ aux cooling paths to cyl heads to try and repair the overheating issues tracked EG33's have had in the past Shotblock has already had all clearances set by my local speedshop and was fully assembled in-shop at AWD. WE are aiming for a power goal of 260AWHP w/ matching torque. This is for two reasons, 1. It needs to pass NJ emissions 2. It needs to be able to be driven on the street effortlessly. Granted we could create a huge cam like Rallybob and the EG33RS guys did but we needed something a little more subtle. This is not a cheap build and the budget Dan has allotted has allowed us to use very high quality parts and address many issues others have experienced in the past. My expectations for this engine are much higher than the goals stated earlier. I fully expect to be flirting w/ 300AWHP/tq but time will tell. More once I know more from Web and Rallybob on the heads Tom |
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Re: 11:1 CR Race/Street Engine build
WOW!!! 260 AWHP sounds awesome expecially for N/A. Good luck and I will be sure to follow closely
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Re: 11:1 CR Race/Street Engine build
That just sounds like a very nice non-turbo engine. I can only imagine what it would be like to drive, especially with a STI/Spec B 6MT gearbox and rear diff.
Looking forward to hearing about the driving impressions...
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"What you plan, and what actually happens ain't exactly ever been similar..." ------------ 1992 Claret SVX. Rescued from certain destruction, and still on the road, where it belongs. Waiting for a bit of a makeover, when I can afford it. 2005 Garnet Red Pearl Legacy GT Limited 5-speed. - The late great Subaru sport touring sedan. 1999 Classic Red Miata, Preferred equipment package 5-speed. Fun, fun, fun, in the Sun, sun, sun. |
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Re: 11:1 CR Race/Street Engine build
Sounds good Tom! I won't bother asking about the price until the build is completely done. What is the expected timeline for all of this? Also, will you be starting off with a baseline dyno number to be able to reference the difference in before and after modifications?
The whp looks neat but it may be more valuable to some to know what the difference in hp/torque than can expect since people will get varying degrees of gains/losses. At any rate, good luck!
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Kevin Thomas 1997 2.2ltr Subaru Impreza Outback Sport Wagon (AWD/Auto) 13.03@100mph 1989 2.7ltr Subaru XT6 (AWD/Auto) 15.912@85.93mph 1996 3.3ltr SVX (AWD/Auto) 15.070@91.38mph ***R.I.P*** 2010 RAV4 AWD Sport (13.717 @ 99.19mph ) 2015 Honda Fit LX CVT (15.2 @ 90mph) |
#5
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Re: 11:1 CR Race/Street Engine build
Nice project, costly too but worth it in my opinion.
What brand are you going through for the electric pumps? Which ones? PS: Tom, pm me I might have something for you on concerning the heads.
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Danny 1994 Silver SVX in hybernation, awaiting for the monsterous awakening (Lebanon) 1967 Mercedes-Benz 250SL Euro Specs, Hard/Softtop, White/Red. Under Complete Restoration 2013 Mercedes-Benz SL350 Euro Specs, White/Red. Mint... Another step into SL Collection. |
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Re: 11:1 CR Race/Street Engine build
I am waiting to hear back from RallyBob on what pump they have chosen for their engine. They seem to have had some good luck with their coolant system in helping the overheating.
Total price will be disclosed at the discretion of the owner. Danny, what did you have in mind, you can feel free to post it here Tom |
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Re: 11:1 CR Race/Street Engine build
Quote:
- SIVN-1012/2 Subaru 2.0lts/WRX Intake valve 36.5x5.96x103.85mm/SS/Black Nitrided/backcut./ +0.5mm head diam./ Length and groove is 0.5mm lower than stock. - SEVN-1012/2 Subaru 2.0lts/WRX Exhaust valve 32.5x5.96x104.20mm/SS/Black Nitrided/ +0.5mm head diam./ Length and groove is 0.5mm lower than stock. - SPRK-TS1015/SU3 Dual valve spring 27.50/20/15.20mm, CB:20.70mm/ 64lbs@36mm / 204 lbs@11.5mm lift/ Chrome Silicon/ Max recommended lift 13.3mm comes with retainers and seat locators. - CF-33/3.0 Cam Follower, solid, 33x26x3.0mm. - 33mm BMW Buckets. The valvetrain configuration is based on a 244° @ .050" duration (stock was 196* @ 0.050", that is nearly an additional of 50* duration), plus a massive valve lift increase (.444"/11.27 mm intake, .460"/11.68 mm exhaust lift). Now I already spoke with the machinist who performed the work on the XXtuning heads, sent him all the info that I have for him to cross reference them with his notes. I am expecting his reply next week. For the camshafts, I am negotiating with another manufacturer, much cheaper than Web.
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Danny 1994 Silver SVX in hybernation, awaiting for the monsterous awakening (Lebanon) 1967 Mercedes-Benz 250SL Euro Specs, Hard/Softtop, White/Red. Under Complete Restoration 2013 Mercedes-Benz SL350 Euro Specs, White/Red. Mint... Another step into SL Collection. |
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Re: 11:1 CR Race/Street Engine build
While that may be good, we are confined to a stock diamter valve due to the piston selection. I originally wanted to use +1mm valves but we withdrew from that idea. I have gutted a set of SVX buckets and I will be using modified 2.5rs shims. I just need to know the shimless clearances before I can order the right sized shims.
Tom |
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Re: 11:1 CR Race/Street Engine build
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Tom |
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Re: 11:1 CR Race/Street Engine build
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Remote mount water pump sounds way COOLER!!!! Is it the coolant pump/poor passage design causing these problems? Can you disclose any pics or diagrams?
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Eric Rebuilt P/S pump info... http://www.subaru-svx.net/forum/showthread.php?t=50918 If your car wont start info... http://www.subaru-svx.net/forum/show...ighlight=click |
#11
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Re: 11:1 CR Race/Street Engine build
I noticed that those who have tracked the automatic SVX do not seem to have had the overheating problems that us manual transmission folks have had. Harry (NewSVX) and Paisan have both tracked their cars without incident. Almost everyone who has tracked a manual car has at least had blowback into the overflow tank. I think this is related to the 6400rpm redline mandated by the automatic shift points versus the 7200 to 7500 rpm that manual drivers use.
Even Jack Laverty (Eg33 RS showcased here by RallyBob) has had a lot of overheating problems. If overheating is related to high revs, I want to get good torque between 5500 and 6500 so I can use 7000 to 7200 as a shift point. As for the cost, by the time it is all done, pistons, long block build, injectors, Hydra Nemesis, equal length headers, dual exhaust, it is probably going to be pushing $12k.
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____________________________________________ 95 LS-i Red, 31,xxx; bone stock for now; Daily Driver 94 LS-i Emerald Pearl, 106,xxx,; 246 whp; Tomyx snorkus and HKS Cold air intake; PWR aluminum radiator, silicone hoses; Inline thermostat; enhanced coolant routing; external power steering and oil coolers; Phenolic intake manifold spacers; 2004 WRX 5 speed transmission; ACT Clutch Kit, Heavy Duty Pressure Plate, Lightweight flywheel, performance disc; Group N motor mounts; ‘07 WRX 4-pot front calipers, cryo-treated slotted Tribeca rotors; Hawk HPS ferro-carbon pads; Frozenrotor rear slotted rotors; SS brake lines, Axxis Ultimate pads; Rota Torque 17x8 wheels; 245/40-17 Bridgestone RE01-R's; Koni inserts with Ground Control coilovers, Eibach springs; K-Mac camber/caster adjustable strut mounts; Urethane swaybar bushings; Bontrager rear sway bar; Urethane differential bushing; Custom Whiteline adjustable rear lateral links; Outlaw Engineering forged underdrive pulley; custom grind Web intake and exhaust cams (11 mm lift, 250° duration); solid lifters; CP custom aluminum forged 11 to 1 pistons, Brian Crower coated SS intake & exhaust valves; Brian Crower upgraded springs w/ titanium retainers; NGK sparkplugs; RallyBob (Bob Legere) ported and polished cylinder heads; Eagle H-beam rods; ACL Bearings; Cometic Head gaskets; ARP head studs & fasteners; Hydra Nemesis EMS; Wideband O2 sensor; 740cc Injectors; Walbro 255lph fuel pump; Upgraded WRX starter; Equal length SS headers (3 into 1); dual Magnaflow cat converters; 2 into 1 into 2 SS exhaust with Bullet muffler; OT Fiberglass hood; Oil pressure gauge; Programmable shift light, 2017 Subaru Forester XT, metallic dark gray, 29,xxx 2005 Porsche 911 Turbo S Cabrio, 24,xxx 2006 Subaru Outback LL Bean, 166,xxx sold 92 LSL Dark Teal, Smallcar Shift Kit - sold |
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Re: 11:1 CR Race/Street Engine build
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Tom |
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Re: 11:1 CR Race/Street Engine build
I read somewhere that the stock water pump of the SVX is extremely efficient, sometimes better than the aux electric pumps. Will the stock pump remain along with the electric pump or are you planning to delete the stock one?
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Danny 1994 Silver SVX in hybernation, awaiting for the monsterous awakening (Lebanon) 1967 Mercedes-Benz 250SL Euro Specs, Hard/Softtop, White/Red. Under Complete Restoration 2013 Mercedes-Benz SL350 Euro Specs, White/Red. Mint... Another step into SL Collection. |
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Re: 11:1 CR Race/Street Engine build
Works for me. Looks like a killer build, can't wait to see what it will do!
Also, the parts vulture in me wants to know if you have two left over ACL bearings you want to get rid of. |
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Re: 11:1 CR Race/Street Engine build
nope, they go back on the shelf with the other couple of sets I have for future engine rebuilds.
Tom |
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