Cast crank from SCAT

AcyTom2 · Post by **AcyTom2** » Tue May 28, 2002 10:17 am

Hi!

I read lot of things about cast crank! But I plane to build some engine over stock 1600.
I live in Croatia so I'm limited with parts... I found at http://www.csp-shop.de/cgi-bin/shop2/sh ... 6590224549
some 78.4 mm stroke crank from SCAT but cast.
To go or not with that or just stay close with 69 counterweights http://www.csp-shop.de/cgi-bin/shop2/sh ... 5976526568
If I use 78.4 cast crank which type of cylinders I have to use 90.5 for 69 or 90.5 for 82 mm crank.

Thanks a lot!

Tomica!

Air-Cooled Head · Post by **Air-Cooled Head** » Tue May 28, 2002 10:45 am

Tomica,
You obviously know the arguments for forged over cast. A cast crank is good up to about 5000 RPM. They don't explode at 5100 RPM, but you'll be pushing it's limits. You'll be OK with cast as long as you drive reasonalby. Once you start pounding on it, you're heading for trouble.
As for pistons, you won't need "B" pistons until you stroke it to 82 or more.
Good Luck with your project. See many VWs there?

[This message has been edited by Air-Cooled Head (edited 05-28-2002).]

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Tue May 28, 2002 12:04 pm

Yuck!

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Jake Raby
Raby's Aircooled Technology
www.aircooledtechnology.com

HotStreetVw · Post by **HotStreetVw** » Tue May 28, 2002 12:26 pm

I spun a cast crank over 7000rpm. Didnt break, used to do it everyday i drove the car. I guess its just insurance to have a forged welded crank. One day i'll break that crank, and i'll cry but untill then im going to run it, car insurance is high enough. Then buy a nice forged stroker crank.

JohnConnolly · Post by **JohnConnolly** » Tue May 28, 2002 3:19 pm

silence is a virtue.

John
Aircooled.Net Inc.

Plastermaster · Post by **Plastermaster** » Tue May 28, 2002 4:09 pm

I have a 2017 with the scat cast crank. I am afraid to rev it or dump on it too quick. Whats the point in putting in parts you are going to worry about? If someday you want to upgrade for more power, you'll have a good crank to build on if you go forged now. I was on a budget and had an engine built that I will have to throw away if I ever want to make much more power.

Ron

John BUG2180 · Post by **John BUG2180** » Tue May 28, 2002 5:47 pm

I have a 69mm Scat cast crank that only sees 1/4 mile bracket racing. I've been shifting it at over 6 grand for 3 years now. So far so good. I didn't know it was cast when I bought it. The original wording in the ads where misleading.

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John Springsteel
VW drag racer
BUG2180@aol

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Tue May 28, 2002 6:52 pm

John,
Thats my line......I would have used it but forgot it!!

Everyone has their own thoughts...Put one of those cranks on a balancer, and you'll be scared to death, I once saw one over 70 grams out, right out of the box. Most forged cranks never need touching on my balancer, until the gears are added.

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Jake Raby
Raby's Aircooled Technology www.aircooledtechnology.com

[This message has been edited by MASSIVE TYPE IV (edited 05-28-2002).]

britegreenVWSB · Post by **britegreenVWSB** » Tue May 28, 2002 8:10 pm

John,
"SILENCE is a virtue"? Never heard that one before. "Silence is golden" but not "silence is a virtue." Here we have a new member to these forums and your not going to give him your reliable, sage advice on this topic? Are you afraid of ticking off some of your suppliers (i.e., Scat)?

Well, even if you stay "silent," I won't!

AcyTom - I would NEVER run a cast crank on any engine that I relied on. I'd take a genuine, forged VW 69 mm crank that has had welded counterweights added by a reputable machine shop (Demello, Berg) over more displacement if the increase in displacement came in the form of a cast crank, ANY day. Period. Am I clear?...

'Nuff said, and good luck!

TG

fastfood · Post by **fastfood** » Tue May 28, 2002 8:14 pm

I agree with britegreen John. A lot of people listen to what you and guys like Jake have to say. It would be a major disservice to the industry to have AcyTom put together this motor way over there with little or no tech support because "Silence is a virtue" You know the deal. At least try an upsell, he will like it better in the long run.

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Rice, it's what's for dinner!!!

Plastermaster · Post by **Plastermaster** » Tue May 28, 2002 8:38 pm

"Silence is a virtue" doesn't take too much imagination to understand. It says plenty.

Ron

Tom Perso · Post by **Tom Perso** » Tue May 28, 2002 8:46 pm

Dontcha remember what your mom told yah???

"If you can't say anything nice, don't say anything at all".

I wouldn't go with a cast crank...

I remember what a fellow lister once said about telling the difference between a cast and a forged crank by the sound it makes when you hit it was a hammer...

"Forged cranks make a nice ringing sound, cast cranks break in half".

Famous words indeed...

Later,
Tom

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Wed May 29, 2002 6:26 am

Guys, I use the term that John used all the time, WE MUST. There are people that know they sell junk that are just waiting for us to bend over, and get their chance. Being publically open with opinions is almost like playing Russian roulette these days.

If we say something like that, or if you see myself answer with "Yuck" then just take things from there, it will not get any more direct from me, than that.

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Jake Raby
Raby's Aircooled Technology
www.aircooledtechnology.com

mharney · Post by **mharney** » Wed May 29, 2002 6:40 am

I guess it surprises me that there is not a larger effect due to fact-giving. Companies continue to sell garbage, and even if they are grilled on public forums like this one, CLF and other big ones, as well as newsgroups... they make NO effort to defend themselves.. I was following a thread in CLF where one person from CB identified himself as such, and even answered on a different thread about a tech question, but all around it were threads bitching about CB products, bad crank threads, slow shipping, etc., and NO defense whatsoever. Apparently silence IS a virtue for these guys cause they keep shoveling garbage (not directing this at CB, but if you've read other threads here about companies like GEX, Bernie Bergmann, etc., you know what I mean.

I guess the combination of enough passable parts and enough people that don't know better keeps the balance for the parts that suck and the people that DO know better weighted on the sheep side of the scale.

What's really bad is that people who are in the best position to give accurate accounts are scared to for fear of losing a supplier. Understandable but that's a LAME way for a less than credible company to leverage their position in the market.

I keep telling myself it all comes out in the wash.. but to date I have to testify that it appears not to be the case.

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68 Beetle, 70 Karmann Ghia
My VW Page

JohnConnolly · Post by **JohnConnolly** » Wed May 29, 2002 7:44 am

We have over 85 suppliers. If we do not carry a product,

1) We are not a dealer/distributor for the product. Either we haven't contacted them yet (not enough interest in the part or product line) or we have contacted them and they felt we weren't worth calling back up (Jamar is one example of us being "not worth it" for them to return multiple phone calls and e-mails).

2) We did contact them, but the company has ridiculous "buy in" amounts, or unreasonable quantities that must be regularly purchased.

3) The vendor doesn't have sufficient markup to make us carrying the product worthwhile. It's horrible (they cut their own throat) when our prices on a product or lineup is close to what their "retail price" is to Joe Blow off the street. Why should we bother if we are competing with our own vendors? Maintaining price structure is critical, for everyone (EMPI is about to go retail, and their dealer network will fall apart soon thereafter, watch).

4) the product sucks, and we won't carry such a product.

Now, you go ahead and figure out why we don't carry some products.

John
Aircooled.Net Inc.