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well, its a start *updated w/ pics*
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Fri Dec 04, 2009 2:14 am    Post subject: well, its a start *updated w/ pics* Reply with quote

i picked up a Vortech T trim for literally nothing. i bought a bearing/seal kit and rebuilt it myself. today i managed to get a bit of machine work done to the "hub" im building for my chain drive.









this is for my DX build ive been working on. the hub will fit on the balancer and also be used as a crank support with a bearing in the end when its finished. unfortunately, i ran out of time today and couldnt finish machining it.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?



Last edited by 10sec.et on Wed Jan 13, 2010 2:07 am; edited 1 time in total
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Knarley Darley
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PostPosted: Fri Dec 04, 2009 1:59 pm    Post subject: Reply with quote

Now you are talking. Even that Oldsmobuick will fly with that thing on there. How many cubes will the new engine be?
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Paul P
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PostPosted: Fri Dec 04, 2009 2:30 pm    Post subject: Reply with quote

Chain drive? Why chain and what kind of chain are you thinking of using?
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2001 Focus 2.0 Zetec
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1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Fri Dec 04, 2009 5:41 pm    Post subject: Reply with quote

Knarley Darley wrote:
Now you are talking. Even that Oldsmobuick will fly with that thing on there. How many cubes will the new engine be?


it was 420" then we offset ground the rod journals another .025 for the small Chevy rod. what does that calculate out to ? ill have to dig up specs on bore and stroke to be any more specific.





Paul P wrote:
Chain drive? Why chain and what kind of chain are you thinking of using?


i like building one-off stuff. i mainly wanted something different than the usual setup. the chain is an industrial ANSI 40 o-ring chain. real close to what is on all the sport bikes except that its not metric.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Knarley Darley
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PostPosted: Fri Dec 04, 2009 6:13 pm    Post subject: Reply with quote

It should be fast since some Chevy parts will be in there Laughing At least with a chain you wont have to worry about belt slip or breakage. The support on the front of the crank is a good idea also, as these things are incredibly hard on crank snouts. Make sure the balancer is keyed all the way.
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squeeezer
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PostPosted: Fri Dec 04, 2009 9:06 pm    Post subject: Re: well, its a start Reply with quote

[



[that outlet is so big i bet ONE.........finger would fit inside it

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clay
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PostPosted: Sat Dec 05, 2009 5:15 am    Post subject: Reply with quote

Cool, I like it! Glad you are getting started - now I can sit back and watch somebody else thrash for a while Laughing . Check the tensile rating on your chain, some of the industrial stuff is a good bit weaker than the motorcycle stuff. Clay
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Sat Dec 05, 2009 5:09 pm    Post subject: Reply with quote

the ANSI 40 chain is rated to 999 lbs. seemed like it would be enough but if anyone knows how to calculate how much it takes to drive a supercharger now would be a good time for that info.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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PostPosted: Sun Dec 06, 2009 12:45 pm    Post subject: Reply with quote

Still interesting none the less to try it. I would be careful to make sure that it is well contained on the backlash side. If you have ever seen a timing chain in slow motion on an engine the back side looks like a rapidly twitching snake.
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2001 Focus 2.0 Zetec
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1971 - Chevelle 408 SBC N.A.
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10.97@121 MPH 1/4mi
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clay
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PostPosted: Sun Dec 06, 2009 9:25 pm    Post subject: Reply with quote

999 lbs. sounds awful low, here is an example of what I'm talking about with motorcycle chain.
http://www.motorcycle-superstore.com/2/9/185/5553/ITEM/DID-520-Standard-Roller-Chain.aspx
As well as I can remember a 520 is the same as a #40. A 530 is the same pitch, but takes a wider sprocket. I know a 520 can handle about anything a 2 stroke dirt bike can throw at it under some horrible shock loads. Shock loads are where I see problems like if you have to get off and back on the throttle. Under a constant pull, I don't think it would be any problem at all. I would put in a guess of 50 h.p. to drive the supercharger. Although I did drive mine around before I finished all the plumbing. It was still N/A but just turning the supercharger. I'll have to say, it felt like it sucked out 100 h.p. - it was a major turd. This was a maximum power consumption situation though and it won't take that much power to turn it when it gets some back pressure on it. I know this sounds backwards but that's the way centrifugals work. It has more to do with the mass of air it's moving than the pressure. Clay

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Paul P
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PostPosted: Mon Dec 07, 2009 12:07 am    Post subject: Reply with quote

The high end chains for the quads are around 8200lbs. Maybe he is missing a 0 at the end of his number?
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2001 Focus 2.0 Zetec
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1971 - Chevelle 408 SBC N.A.
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clay
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PostPosted: Mon Dec 07, 2009 12:43 am    Post subject: Reply with quote

I don't know. I know from some of the chain failures we have at work (fairly slow speed and no real shock loads) with normal industrial chain, a motorcycle chain would never fail under the same circumstances. Just looking at the side plate thickness where they normally fail, a motorcycle chain is probably half again the thickness. Another thing is how the chains are assembled, where you can use a chain breaker on the industrial chain and get it apart fairly easily, as you most likely know on the quad staked motorcycle stuff, you have to grind off the staked end of the pin to drive it out with a punch - they are just designed and put together so much better. Clay
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Mon Dec 07, 2009 12:48 am    Post subject: Reply with quote

load rating is different than tensile strength. that 520 chain has a tensile strength of about 7200 lbs but load rating is much lower. after researching a bit more, the ANSI 40 chain is equilivent to a 425 motorcycle chain. unfortunately, it doesnt seem to be available. only 420 and 428. neither of those will fit my sprockets and sprockets to fit those chains are too small diamiter to use for the crank sprocket. so, i just need to figure out if the 40/425 chain will live. wher are the engineers ?................ DAVE!!!!
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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af2
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PostPosted: Mon Dec 07, 2009 1:36 am    Post subject: Reply with quote

Use a Gilmer so when it brakes you don't take the front of the engine with it.
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Mon Dec 07, 2009 2:22 am    Post subject: Reply with quote

af2 wrote:
Use a Gilmer so when it brakes you don't take the front of the engine with it.


you mean a cog setup ? if i cant figure out how to make this chain setup work then thats my next option. there are chain drives out there running but getting info is like trying to get speed secrets from NASCAR. im not hell bent on a chain drive but im going to go as far as i can with R&D.

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