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Icarus

VW Enthusiast
Registered: 02/18/04
Posts: 12
Reply with quote  #1 

Hello all you Volks. lovers. My '73 stock motor is about to bite the dust. Over the course of it's long life it has seen six rebuilds and covered a retardedly

huge amount of mileage. The case is finally so out of spec. I wouldn't feel confident rebuilding it again. I began shopping around to see what a new engine would cost to build from the crank out. My question is this, I found a Scat long block 1915cc on Jcwhitney.com a Volkstroker III, to be exact, for 2399.95. This seems to be a pretty good buy as all the components individually come out to almost the same price. Specs. for the motor seem to be very good, looks to me like this stroker could churn up some good horsepower numbers. Does anyone have any experience with Scat long blocks. I know them to be a reputable producer of quality parts. Heck, I have a few of there comp. on my stocker. Any feedback or recommendations anyone can provide would be greatly appreciated.

Ryan

Registered: 04/02/04
Posts: 697
Reply with quote  #2 
First off a 1915 is not a stroker.  Secondly, if the parts alone almost cost that much, then who built it for free?  The point is, they have to skimp somewhere if they want to make a profit at that cost.  Likely the heads have little to no work and it was just slapped together by some no name shop hand.  If you want a good engine, aside from stock, then a production line is not the way to go.  You already seem to have building experience, I say stick with it.  --Ryan
Icarus

VW Enthusiast
Registered: 02/18/04
Posts: 12
Reply with quote  #3 

Sorry, your right 1915cc would not be a stroker. I saw 94mm cylinders listed and automatically thought 1915, but it does list a 78mm crank which should put displacement somewhere near 2165cc. I only ask as I have always had a really good experience with JC Whitney.

Ryan

Registered: 04/02/04
Posts: 697
Reply with quote  #4 

Quote:
Originally Posted by Icarus
... I have always had a really good experience with JC Whitney./QUOTE]

 

You would be one of the very few.  Their odds are worse than playing in Vegas.  Even so, it has nothing to do with JC Whitney in this case, or any for that matter.  None of the product is their own, they re-sale everything for 3rd party vendors.  Scat is the company you should be concerned with and lately I'm liking them less and less.  Let me rephrase that, if I have the choice, I will never buy a Scat product again.  The only broken cranks I've seen pics of have all been newer Scats.  And they still can't get the lifter problem solved, or even aknoweldge it.  --Ryan

Icarus

VW Enthusiast
Registered: 02/18/04
Posts: 12
Reply with quote  #5 

Weird, I've never had problem from either company. However I understand were your coming from. Now you say the broken cranks you've seen were newer Scats. Has there crank quality always been poor or is that a more recent development? Who would you recommend as a producer of a

good quality stock length or 74mm counterweighted crank? Like you said I may as well build it from the crank out. If I go that route I don't mind spending a little extra cheese on a good crank. Thank you for your feedback.

Ryan

Registered: 04/02/04
Posts: 697
Reply with quote  #6 

I personally have not broken a crank, ever.  Then again all mine or OE German cores.  However, every broken crank I know of (4-5 if memory serves) was a Scat crank that broke at the oiling groove in the #2 main.  It's a more recent problem, probably the last 4-5 years, maybe earlier but this is when I first learned of it.  The problem seems to be that they overdo the hardening process (nitriding) and make the crank brittle.

The lifter problems are no secret to anyone.  Scat lifters pit and will wipe out your cam in time.  It may be on breakin, 2k miles, or even 20k miles, but it will happen.

As for JC Whitney, they just seem to get everyones leftovers.  They have nothing to do with the quality of what they sell, but the do tend to pick the lowest quality manufacturers.

For a crank, you have few options in that size.  DMS or DPR for welded stock cranks, or CB for a 1 piece forged crank.  I trust all three equally.  --Ryan

Icarus

VW Enthusiast
Registered: 02/18/04
Posts: 12
Reply with quote  #7 

After some consideration I think I'm going to need to go with a 78mm crank, as I'll have to use some pretty large spacers for the 74mm using the req. pistons. Thanks again for your feedback.

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