Real world Carb Shootout.

[TheNowhereman]

A Bro sent me this some time ago from another site.
We were discussing our carb tuning / development work.
This article is probably one of the most concise, non BS studies as to what works on HDs and why.
This is must reading for anyone looking to upgrade their existing carb'd HD engines...

[zimmy]

Any chance of a link for us non-premium folk?

[TXCHOP]

Yup, a member here Bruce Woltz did the testing a while back.

Here is a HERE

[TheNowhereman]

Originally Posted by zimmy

Any chance of a link for us non-premium folk?

I'm no premium user either.
PM me and I 'll send it to you.
There's always more than one way to skin a cat.

[tx_shooter]

There may be.... but there isn't a way the cat likes.

Thanks for the post Nowhereman... thats deep reading. There is one test number I really wish was there - the stock CV carb on manifold. Other than that it is a great read.

[rel3rd]

Like tx_shooter said, it's some deep reading and showed a ton of effort, but definitely isn't the last word on carb choice either.

Any flow bench testing numbers should always be taken with a grain of salt since not every engine needs, or will respond and run the best, with any specific carb just because it has the highest flow numbers. That's a generic rule of thumb.

The whole combo being "matched" is what separates the engines that SHOULD run good, and those that DO run good. From building and helping tune several strong running street and street/strip cars over the last several years, I've seen many people blindly build their cars/engines for impressive flow numbers, or impressive dyno numbers, and more often than not, they ran MUCH less impressively on the street or strip than their owners had hoped.

Not trying to take anything away from the original tester's info, but always look at the BIG picture of your expectations and what sacrifices you can accept, before jumping onto the BIGGER IS BETTER bandwagon.

[dog155]

Originally Posted by rel3rd

Like tx_shooter said, it's some deep reading and showed a ton of effort, but definitely isn't the last word on carb choice either.

Any flow bench testing numbers should always be taken with a grain of salt since not every engine needs, or will respond and run the best, with any specific carb just because it has the highest flow numbers. That's a generic rule of thumb.

The whole combo being "matched" is what separates the engines that SHOULD run good, and those that DO run good. From building and helping tune several strong running street and street/strip cars over the last several years, I've seen many people blindly build their cars/engines for impressive flow numbers, or impressive dyno numbers, and more often than not, they ran MUCH less impressively on the street or strip than their owners had hoped.

Not trying to take anything away from the original tester's info, but always look at the BIG picture of your expectations and what sacrifices you can accept, before jumping onto the BIGGER IS BETTER bandwagon.

Any information is good information as long as it is applied correctly.I too am an old school tuner,never needed dyno numbers to tell me what kind of improvement numbers am making.My numbers show by reading spark plugs and the way the bike or car performs.Knowing the numbers does little for me,except in this case,a lot of leg work is already done.Great information!