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Prerunner Buggy - Built NA EG33
Wanted to share our 4-seater prerunner buggy with fully built NA EG33. There doesn’t seem to be a specific sub forum to show the whole engine build and details but maybe someone can point me in the right direction.
A few highlights: -100mm bore, Darton sleeves -H beam rods -MoTec engine management -Dry sump -6 into 1 stainless exhaust -Top feed fueling Last edited by GonzoRacing; 07-27-2022 at 06:25 PM. |
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Re: Prerunner Buggy - Built NA EG33
Hello where did you get the sleeve done I'm working on the stroker kit but can't find someone to do the sleeves
Jim |
#3
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Re: Prerunner Buggy - Built NA EG33
Steve Dimerjian of Race Engine Development in Oceanside, CA did the sleeves.
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#4
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Re: Prerunner Buggy - Built NA EG33
Thank you I will look them up. what cams did you go with?
Jim |
#5
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Re: Prerunner Buggy - Built NA EG33
I believe this forum is a great place to discuss it. PICTURES PLEASE!
__________________
1995 Caterham 7 Twincam 2002 Porsche 911 targa -- now with FSI 4.0L power! 2007 BMW 328i Cabriolet 2012 Tacoma 4wd v6 Access Cab 2013 Mercedes E350 4Matic Wagon 2005 STi - totaled after 10 great years 1994 SVX LSi 5spd - sold but not forgotten 2000 Legacy GT 5spd sedan - gone after 150K miles of bliss |
#6
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Re: Prerunner Buggy - Built NA EG33
We decided to stay with hydraulic buckets and went with Delta 272 cams.
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Re: Prerunner Buggy - Built NA EG33
Quote:
After tear-down we sent everything out for machining. Darton sleeves from Race Engine Development, cylinder hone and align bore at Danzio, valve job and head work at Paradise Motorsports. We wanted to go back to NA for our application so we had CP Carillo make us some 100mm high compression pistons. The engine came with ARP head studs which was a nice compliment to the h-beam rods and ARP rod bolts. We used ACL race bearings, Cometic MLS head gaskets and the short block came together. The heads already had some mild porting, but we elected to stay hydraulic and Delta 272 cams. To fit in our rear-engine buggy we needed to flip the intake manifold. I know you can relocate the alternator and accessories but we needed it to stay in the stock location so that our dry sump pump could fit on the side. We machined two 1/2” manifold spacers to get the clearance over the alternator. When we first got the engine it was still running a wet sump, but came with an old 2-stage Aviaid oil pump. We completed the dry sump setup by making our own pan and welding in -12 fittings for scavenging. This let us mount the engine pretty low in the chassis. |
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Re: Prerunner Buggy - Built NA EG33
With a pretty complete engine, we mounted it to the 5-speed Weddle S5 sequential transaxle and started to build the exhaust and induction. I know that the even-fire nature of a flat-6 and the evenly spaced 120* pulses lend themselves to two separate exhaust banks with 3-1 collectors, but for the packaging of this car an equal length, tuned 6-1 system was a better fit. I worked with some industry colleagues to calculate the best primary length and diameter, then I got to TIG welding all the stainless.
The intake already had the IRIS deleted from the previous forced induction setup so we left it that way. This engine isn’t going to spend much time at low RPM anyway. The air filters are twin Unique Metal Products centrifugal filters common among desert racecars and industrial equipment. Just about all the AN plumbing and wiring is done now and we’ll be headed to the dyno soon. Engine management is from an old MoTec M48 and HEX6 ignition, Sakata Milspec harness. Here is a complete list of the components in the build. To sum up, we wanted a low-stress and reliable flat-6 for this car hence going back to NA, big bore sleeves, and a little higher compression. We hope it makes good power and sounds mean. Build sheet: Darton Sleeves - 100mm bore Flex plate cylinder hone and align bore by Danzio CP Carillo forged pistons Compression Ratio - 11.6:1 Cometic MLS head gaskets - .040” ARP head studs Delta Camshafts - 272 duration Stock forged Crankshaft - refurbished by Marine Crankshaft Crower H-beam connecting rods ARP Rod bolts ACL race bearings - mains and rods CP Carillo wrist pins CP Carillo pin bushings CP Carillo piston rings Wrist pin oil squirters Ported cylinder heads - full valve job clean up skim cut by Paradise Motorsports Top feed fuel rails and injectors External LS1 ignition coils Aviaid Dry Sump pump Custom billet aluminum dry sump plate Sakata Motorsports Milspec wiring harness MoTec M48 ECU MoTec IEX/HEX 6 ignition KEP flywheel KEP stage 3 pressure plate KEP adaptor plate KEP 6-puck clutch disc NGK Platinum plugs OE Subaru lifters and gaskets Custom Stainless Exhaust FAST 1 Bar MAP Dual UMP filters DeatschWerks 450cc injectors |
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Re: Prerunner Buggy - Built NA EG33
Beautiful build. I can't wait to see and hear how it runs and what the numbers are.
I love the vinyl Baja job on the car too!
__________________
1997 Bordeaux Pearl, 2006 Alfa Romeo Brera 3.2 6MT, 2010 Mercedes Benz GLK350, 2018 BMW 640i GT Xdrive, 2012 Moto Guzzi Norge GT 8V, |
#10
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Re: Prerunner Buggy - Built NA EG33
Thanks! Not expecting huge numbers but something decent.
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#11
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Re: Prerunner Buggy - Built NA EG33
I went with the delta cams also but putting solid bmw buckets in.
also I have one svx stock except tcu chip and running z32 maf with 550 yellow top injectors and ecu chip to match, runs great if you need more fuel give them a try. Last edited by svxnavyvet; 07-28-2022 at 06:27 PM. |
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Re: Prerunner Buggy - Built NA EG33
I don’t expect I’ll need more fuel but thanks for the recommendation. How do you like the cams?
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#13
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Re: Prerunner Buggy - Built NA EG33
I'm spoiled have several svx's. the one the cams are going in still need the sleeves installed?
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