FE and Holley Carb Queries

[kdavies3]

Hi Guys,
more queries for you.
I have a Holley 4150 currently mounted the other way around from the norm ie vac pipe to PCV is at the front not the back.
I have this way around because my car is right hand drive and it made the throttle easier to set up. I don't believe this is an issue?
Any way the carb is tilted slightly forward so should I fit a wedge plate to bring it level?
Also do FEs usually need a thermal spacer to stop heat soak into the carb?
I decided not to fit my turkey pan.

[DanEC]

Have you measured how far from level the carb is sitting? A degree or two of slope will probably not affect the float bowls and adjustment much. Three or more degrees could create some float bowl issues.

It's always good to use a thermo spacer under the carb, if you have room for it. The carb wedges can be as much as 3/4 inch thick at the thickest end. If you end up going that route you may not have room left for a thermo spacer.

[kdavies3]

Thanks Dan, I'll put my angle meter across the carb, I see most wedges are 5 degrees.
I haven't seen a wedge plate and thermal insulator combined have you?
Maybe I should invent one?

[DanEC]

Originally Posted by kdavies3

Thanks Dan, I'll put my angle meter across the carb, I see most wedges are 5 degrees.
I haven't seen a wedge plate and thermal insulator combined have you?
Maybe I should invent one?

I actually toyed with a related idea. I was going to take a bunch of standard Holley gaskets and cut several of them at incremental lenghts and sandwhich them between two full gaskets with RTV inbetween to create a wedge gasket which would have some insulator value. It's a little half baked and once my motor was in and seems to only be a degree or two off horizontal, I kind of shelved it.

But, you might be on to an idea. The manufactured wedges I've seen are 5 to 8 degrees and pretty thick. A 3 to 4 degree wedge built out of insulator material of minimum thickness might be a popular accessory.

Dan

[Gaz64]

Our cars in Australia are RH drive, but we still fit the carbs the way.

Most carbs are designed and calibrated to be mounted primary side forward.

After all, ALL spreadbore manifolds are only made for primary side facing forward.