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TECHNICAL => GEN II BUSA => Topic started by: madracer3600 on November 04, 2015, 10:30:04 PM

Title: gen 2 motor build 1441/1507/1535
Post by: madracer3600 on November 04, 2015, 10:30:04 PM

I'm getting ready to build a motor and can't decide what size. I'm looking at 3 options 1441/1507/1535. I know hp depends on combination. What are the gains I'm looking at between the three? (Hp and torque number everything being the same in a perfect world) What are some of the draw backs of running a weld up crank?

Title: Re: gen 2 motor build 1441/1507/1535
Post by: fvance on November 04, 2015, 11:12:22 PM

What are you going to use thebikefor? Street or track.

Title: Re: gen 2 motor build 1441/1507/1535
Post by: madracer3600 on November 04, 2015, 11:27:32 PM

99% track 1% in an off chance someone wants a friendly street race.  :D It will be a trailer queen.

Title: Re: gen 2 motor build 1441/1507/1535
Post by: MJ Williams on November 05, 2015, 02:29:34 PM

I'd say go for the Carpenter 1630. I know one or two folks that have them (Hi Fred) and they are f'ing fast.

Title: Re: gen 2 motor build 1441/1507/1535
Post by: fvance on November 05, 2015, 03:46:10 PM

I have an "old" style Carpenter head and 1657cc. It runs OK!! :hys: The newer Carpenter head, 1635cc, make more HP than mine.

Title: Re: gen 2 motor build 1441/1507/1535
Post by: madracer3600 on November 05, 2015, 08:41:04 PM

You are right I'm sure it flies but i'm on a budget and I mostly bracket race with the occasional heads up race with some local guys for very little money. Really wondering was, is thousand dollars to stroke a crank worth the money?

Title: Re: gen 2 motor build 1441/1507/1535
Post by: fvance on November 05, 2015, 10:47:55 PM

I Don't know what they charge, but Marine Crankshaft is the only place to have stroke your crank.

Title: Re: gen 2 motor build 1441/1507/1535
Post by: Stainless1 on November 06, 2015, 09:46:27 PM

Quote from: madracer3600 on November 05, 2015, 08:41:04 PM

You are right I'm sure it flies but i'm on a budget and I mostly bracket race with the occasional heads up race with some local guys for very little money. Really wondering was, is thousand dollars to stroke a crank worth the money?

probably the cheapest HP you can buy for a well developed motor...