Carb Spacer - Airflow Test

Nice Test Jay, Thanks for Posting the Results.

Jay, I have a 750 holley vac.sec. you can try

Keith

IDTJay wrote:GT300TD,

Yesterday afternoon, John B. from Jomar and I had this coversation. He wanted to test a 750 cfm carburetor with the appropriate tapered spacers. When we are ready to test the 750 cfm tapered spacer; if you are willing, we can use your carb for the testing. We can test at different volumetric flow rates and see the differences. Let us know.

Jay

Jay,
You just may have made me an offer I CAN NOT refuse.
Would it be OK if I sent you both the 750 and the 775 and my spacers?
I'll send you a copy of my build, and my future intentions, if that would help you determine what is best.
Thanks,
T.Smith

IDTJay,

PM sent

T.Smith

Jay,

Thanks for the explanation. That's the only plausible reason I could think of, for your testing at 20.2" H2O. Again, nice test and it's appreciated.

Note to the guys, we've been running Jomar Power Cones for a few years now, and sometimes the carb pad on the manifold needs to be opened up (or ported), to match the exit of the Jomar. IMO pad to manifold "matching" is required.

Charlie Evans

c.evans wrote:Jay,

Thanks for the explanation. That's the only plausible reason I could think of, for your testing at 20.2" H2O. Again, nice test and it's appreciated.

Note to the guys, we've been running Jomar Power Cones for a few years now, and sometimes the carb pad on the manifold needs to be opened up (or ported), to match the exit of the Jomar. IMO pad to manifold "matching" is required.

Charlie Evans

To put some context to this post.....Charlie's statement is mostly relavant to the powercone spacers for the big bore 1250 & 1450 dominators.

bruno wrote:Thank you for sharing those results Jay

Nick, you should make this one a Sticky ! This subject about different spacers pops up from time to time.

so does this have similar results with nos plate engines or is this for n/a engines? Was just wondering if the plate would effect the flow

Jimmy ,

good question, i know from my experience we lost around 14hp with the big shot plate deal , i will look at my paper work this morning to make sure

Thanks Nick ,I figured it would thats why we push that button (more flow)

when you are stacking the spacers, the Jomar goes to the carb, right, lay the open spacer on the intake, am I right?