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Cal-look/High Performance => Pure racing => Topic started by: JIMP on March 20, 2008, 23:06:08 pm



Title: 86mm crank, but which one?
Post by: JIMP on March 20, 2008, 23:06:08 pm
Hello all

as a friend of mine wants to start building a 2387 T1 for hot street-eventual strip use, I thought to hear very carefully your suggestions on this point..which 86mm crank to use? Well for sure we can't afford for the best one, I know also that Scat would be an excellent choice for our engine but is a little bit to the expensive side, so what other choices we have? The engine is supposed to be to the 200Hp limit not exceding much the 7.000rpms, so we need a crank to be affordable but still on the safe side for our application, so for example could we trust a CB crank or not and if not what else, I really hope for your help on this..

Friendly

Dimitrios


Title: Re: 86mm crank, but which one?
Post by: GreenTom on March 21, 2008, 00:15:07 am
as I remember I heard spmeware that 86 (type1 center not flanged) brakes... I don't know which make but its a fackt.


Title: Re: 86mm crank, but which one?
Post by: Steve D. on March 21, 2008, 00:44:43 am
as I remember I heard spmeware that 86 (type1 center not flanged) brakes... I don't know which make but its a fackt.

Crankshafts don't break- people break crankshafts.

That said, I've seen a dozen or so flanged cranks converted to two-piece cranks, yet I've seen a pump gas motor make over 220hp with a welded crank that had over a half dozen cracks in it- motor ran fine except when torn down the crank rang like a rock.  Come to think of it, I've never actually seen a broken welded vw crank...

As far as what's available today, the CB cranks are pretty nice, or you could always go with a welded german crank from your favorite shop- I'm a big fan of DPR myself.


Title: Re: 86mm crank, but which one?
Post by: 58vw on March 21, 2008, 05:03:12 am
ya...people kill people...not guns right steve ;D


Title: Re: 86mm crank, but which one?
Post by: Steve D. on March 21, 2008, 06:29:00 am
Nope, Chuck Norris kills people...

 ;D


Title: Re: 86mm crank, but which one?
Post by: Scott Novak on March 21, 2008, 06:38:42 am
Actually, guns don't kill people.

People using cell phones while driving kill people!


Title: Re: 86mm crank, but which one?
Post by: JIMP on March 21, 2008, 08:24:28 am
hello

thanks for the quick replies, actually I heard people saying that the CB 86mm breaks -broke were their words- (as Green Tom mentioned) but haven't seen or they showed to me one. This was the fact on which the thread begun, because CB is very affordable and I had heard those rumors, have you ever heared of that? And then what about bugpak, are they considered to be inferior or superior comparative to the CB ones? Just for reference, for my engine I have got an 86mm Scat flanged but for this one building now we can't afford it.

Friendly

Dimitrios


Title: Re: 86mm crank, but which one?
Post by: benssp on March 21, 2008, 18:24:15 pm
I'm going for a DPR although they haven't got back to me saying if they can do a type 4 main :)


Title: Re: 86mm crank, but which one?
Post by: Tony Wilkie on March 21, 2008, 21:04:40 pm
Jose @ DPR can do all T4 mains if you like. Give him a call.  714-979-7441
DPR is all I use. Excellent customer service and product!

tw


Title: Re: 86mm crank, but which one?
Post by: jr59 on March 21, 2008, 21:07:23 pm
Well nowaday it's hard to know the truth about crank...chinese or not?
I paid more than 1000$ to buy a old but new 86mm bugpack with T4 center main wedgemated (quite luky to find it ;D)
Needless to say that the CB ones are very afforable but due to std T1 main perhaps they are softer to go higher than 7000rpm,but actually who know?
DPR or DMS make very good product with welded german crank (I ran a 84mm with chevy rod bearing size 4 years with no bad issue and it's still run in anoher engine!)
Hard choice for sure!!


Title: Re: 86mm crank, but which one?
Post by: benssp on March 22, 2008, 10:10:48 am
Jose @ DPR can do all T4 mains if you like. Give him a call.  714-979-7441
DPR is all I use. Excellent customer service and product!

tw


Thanks, I will call him ;D