Lightweight Crankshaft

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Apr 13, 2005 | 12:01 AM

NitrousSam

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Melting Slicks

Joined: Oct 2003

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From: Mount Vernon OH

Lightweight Crankshaft

Is anyone on this forum running an ultra light weight crankshaft like a Winberg model? If you have one can you share with me what your crankshaft weighs? I have heard they make a 3.75 stroke crank that weighs 33-34 lbs. This seems very light to me but I have heard from some guys that were running ex pro stock truck engines that Winberg makes some smaller small block cranks that weight even less.

Apr 13, 2005 | 01:25 AM

cv67

Team Owner

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From: altered state

St. Jude Donor '05

A 34 lb crank is light . Is this for the street. race, or?
I wouldn't recommend a superlight crank or flywheel for that matter on a street car. Just my .02

Apr 13, 2005 | 09:48 AM

SonnyinVA

Melting Slicks

Joined: Apr 2002

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From: Portsmouth VA

http://www.colaperformance.com/main.php?stm=PRODUCTS

look about halfway down the page and you will see some really lightweight cranks...

i am also using a 11 pound flywheel... as far as using it on the street... it all depends on what clutch you use, and how particualr you are about how the car drives. street use to me doesn't necessarily mean bumper to bumper traffic, i would avoid that as much as possible with the lightweight assembly and an aggressive clutch. but i do drive mine on the street, i just avoid high traffic times.

Apr 13, 2005 | 10:05 AM

Caboboy

Le Mans Master

Joined: Mar 2002

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From: Castro Valley Calif.

St. Jude Donor '03 thru '26

I'm using a Scat "superlight".......about 48 lbs. I thought it was a real nice piece for the money. There's a couple pics of it and other parts of my rotating assembly in my pics to the left

Apr 13, 2005 | 11:14 AM

ztrips

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If as your name suggest, you are running NO2, I'd be careful with a lightweight crank... An extra 5-10lbs of rotating mass isn't going to effect performance as much as it will reduce the life of your bearings....

Apr 13, 2005 | 12:49 PM

NitrousSam

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Melting Slicks

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From: Mount Vernon OH

Quote:

Originally Posted by cuisinartvette

A 34 lb crank is light . Is this for the street. race, or?
I wouldn't recommend a superlight crank or flywheel for that matter on a street car. Just my .02

I was thinking about building a higher rpm road racing engine which is why I was thinking this could be an opportunity for some added performance. I have so many projects going on right now that this may or may not become a reality and I am at the initial research stage. My idea was to reduce as much rotating weight within the engine without giving up a lot of strength. There is obviously a trade off when considering a project like this but it seems like for a road racing engine it could be worth the added cost.

Apr 13, 2005 | 01:04 PM

NitrousSam

Thread Starter

Melting Slicks

Joined: Oct 2003

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From: Mount Vernon OH

Quote:

Originally Posted by Caboboy

I'm using a Scat "superlight".......about 48 lbs. I thought it was a real nice piece for the money. There's a couple pics of it and other parts of my rotating assembly in my pics to the left

I would also consider a Callies crank because I have had really great luck with Callies in a few of my other engines. I also like the idea that they are made in Ohio which helps support our state economy. Callies has cranks ranging from small stroke cranks as light as 33 lbs to 46 lbs for a larger stroke. http://www.callies.com/catalog/cranks/magnumXS.html

I have heard many positive things about Winberg Cranks and I was hoping someone on here could share some experiences with me.

Thanks!