944 Engine for Endurance racing

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TOPIC: 944 Engine for Endurance racing

Re: 944 Engine for Endurance racing 12 years, 3 months ago #13845

944Racer72
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Endurance Racer
Posts: 748

Wow, you're a lucky guy! I'd still check to make sure it hasn't been removed from the car. Jack both rear wheels up and spin one while in neutral. If both wheels turn the same direction, it is LSD. If they go opposite, no LSD.

Even if you have an LSD, it is probably pretty worn out depending on mileage. I recommend removing and sending off to Guard. For about $500, they will rebuild the diff and it makes a WORLD of difference if the diff was weak.

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Re: 944 Engine for Endurance racing 12 years, 2 months ago #13868

1M Fan OFFLINE Junior Racer Posts: 47	Sterling Doc wrote: Depending on how far you go into the motor, using an '83 cross drilled crank, or cross drilling a later crank can be helpful. In any case put new rod bearings in, and check that the clearances meet spec. Steve's got the rest pegged above. Good luck! So 83 Crankshafts have the cross drill mod already done?
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Re: 944 Engine for Endurance racing 12 years, 2 months ago #13869

Sterling Doc OFFLINE Endurance Racer Posts: 2102	Yes, and they are forged. Not lighter, though.
	Eric Kuhns National Director Emeritus 2007, & 2008 National Champion 2011, 2012 2nd Reply Quote

Re: 944 Engine for Endurance racing 12 years, 2 months ago #13870

1M Fan OFFLINE Junior Racer Posts: 47	Sterling Doc wrote: Yes, and they are forged. Not lighter, though. I'll take the couple of extra pounds for durability.
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Re: 944 Engine for Endurance racing 12 years, 2 months ago #13872

karbuf OFFLINE Comp School Posts: 33	The crankshafts for the turbo 2.5L's are crossdrilled (according to pics of cranks for sale on ebay) .. Will these work in the non turbo 2.5L? And does anyone know weight diff between cast and forged cranks? A couple lbs of rotating weight seems significant to me..
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Re: 944 Engine for Endurance racing 12 years, 2 months ago #13874

Sterling Doc OFFLINE Endurance Racer Posts: 2102	No difference in weight either way. Both cranks are very strong. The only functional difference is the cross drilling. I don't know about the turbo cranks. Rumor has it they are the same, but I can't verify that.
	Eric Kuhns National Director Emeritus 2007, & 2008 National Champion 2011, 2012 2nd Reply Quote The following user(s) said Thank You: karbuf

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