2.5l 5cyl via diesel crank and smaller bore

[JShadzi at aol.com]

Hey Cody, yes, Marc is correct in his info.  There is an idea that the 95.5mm crank is a diesel crank, but in the US the 95.5 crank is out of the gas Eurovan motor, this fits quite well inside the "low-deck" I5 block (the EV block deck was 1.6cm taller than the standard I5 block), you'll need to clearance the block to get it to fit, and of course re-address the piston-rod geometry (there are a lot of options, realistically you can use stock rods and have custom pistons made to fit), but other than that its quite straight forward.

Don't forget, even a mega stroker motor is still "only" 2.5-.6 liters, this small motor is never gonna be a big tourqe monster, if anything you can use the extra displacement to spool up a given turbo quicker than in a 2.2, which works quite well.

Javad


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>I was reading an article the other day (for the 40th time) about a 500+hp Dialynx 20v that used a diesel crank to bump up the stroke, then they lowered the bore to get it to 2.5l. I was wondering about simmilar combinations for my MC motors. Any BTDT with a diesel crank in an MC to get some torque? I know of some diesel 5cyl cars arround that I can snag a crank from, but what fits and what doesn't? Are there any OEM rods that go with the combo to keep low compression, or do I have to go to Pauter/Carillo?
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>Thats one thing I really love about Porsche. Theres 4 katrillion combonations of stuff from the parts bin that work to get you the exact thing you want. My 914-6 2.5l race motor for example uses a 2.4l 911 crank, 2.0l 911 rods, top secret ;-) OEM Porsche heads, 904 oil pump, and it all fits inside just about any 911 case from '69 through the '80s. How great is that? If we go to a small track we build a motor with a longer stroke, smaller bore, same displacement (+/- 25cc), to pull out of the corners better, go to a big one like Sebring or Daytona and you build a big bore short stroke so you can wind the tach clear off the dial up on the high banking. All on OEM Porsche parts. Thats what I call a beautifull parts bin.
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>Cody Forbes
>2x '86 5ktq
>'87 5ktq - EFI is mostly on, gota touch up wiring and finish fuel lines hope to run her by the end of the week.
>'88 80 4cyl - Awaits 5ks EFI so it can get out of daily driver status and get some much needed attention.
>Hey wait the 914s count as VAG! I wont even get statred on that one (have too many cars, but thats what you get having been raised at your fathers Porsche shop/race team).
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