A Word About Velocity Stacks

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Postby Shannon » Thu Mar 06, 2008 6:21 pm

It has come to my attention that several high time velocity stacks have been found with cracks in the flange area. It would be a good idea to check your stacks for hairline fatigue cracks in the area shown.
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Postby Shannon » Thu Mar 06, 2008 6:25 pm

Lucky for us George is making OEM type new stacks as replacements ! I highly advise everyone to buy extras while they are available.
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Postby uscgairdale » Thu Mar 06, 2008 10:58 pm

Should I invest in some of these stacks for my KFMs? I opted to move away from the OVC carbs and was planning to get some adapters for my Mikuni 34mm pumper carbs so that I could mount some K&N air filters, but perhaps velocity stacks are the better way to go.

It seems to me that I would then be able to prime my fuel lines the same way as 185s and do away with my primer bulbs or some other elaborate fuel delivery system.

A cursory looksie at my carbs looks like some stacks should mount up nicely.

Dave
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Postby Shannon » Fri Mar 07, 2008 7:46 am

Give it a try. Who knows you may pick up a couple hundred rpm. I know nothing about KFM's but I'd be careful with tuning so as to stay on the rich side initially.

I've always been told that 185s loose a good bit of power (100-200 rpms ?) with filters. To me unless you are flying from some extremely dusty area any reduction in power is unacceptable.
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Postby gdewsbury » Tue Dec 30, 2008 7:08 pm

George

Do you still have some velocity stacks?
I'd like to get a couple.

Glen
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Postby lazairiii » Wed Dec 31, 2008 2:58 pm

Hi Glen,

I believe I may have one set on the shelf. If not, I have the materials in the shop to make you up a set. E-mail me offline.

george@aspenpress.com

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