AU xr8 hood clearance

Ben · 27-08-2021, 11:22 PM

Anyone know if a 1 inch spacer is to much so I can run taller rocker covers to fit stud mounts with an RPM2 on a efi windsor. Trickflow also do a 3/8 phenolic spacer but unsure if this will be enough.

CFOUR · 28-08-2021, 01:34 AM

yeah the tps will hit the bonnet insulation with a 1"one an if you loose/have-a-worn-out a engine mount it will dent the bonnet in that spot, 1/2" fits. heres one, sorry for the ebay link https://www.ebay.com.au/itm/12MM-MAN...-/401415924165

Ben · 28-08-2021, 09:30 AM

Thought I would add some more context.

Looking at options for heads/cam at the moment. Looking at the AFR 165 pedestal mount but just figuring out what would need to be done to go with a stud mount 11r 190 heads combo.

Main issue seems to be clearance issues with stud mounts.

**73 4V XB** · 28-08-2021, 10:04 AM

A little trick I learned years ago is make some dough, flower and water, or if you have blue tack or plasticine on hand. Roll it into a a length, cut it to the required height, 1” for a 1” spacer and put it on the highest point and close the bonnet. It will compress to show exactly how much clearance you have and won’t damage a thing.

tbro4123 · 28-08-2021, 04:07 PM

Quote:

Originally Posted by 73 4V XB

A little trick I learned years ago is make some dough, flower and water, or if you have blue tack or plasticine on hand. Roll it into a a length, cut it to the required height, 1” for a 1” spacer and put it on the highest point and close the bonnet. It will compress to show exactly how much clearance you have and won’t damage a thing.

Called Playdough!!!

Bossxr8 · 30-08-2021, 01:43 PM

Quote:

Originally Posted by Ben

Thought I would add some more context.

Looking at options for heads/cam at the moment. Looking at the AFR 165 pedestal mount but just figuring out what would need to be done to go with a stud mount 11r 190 heads combo.

Main issue seems to be clearance issues with stud mounts.

I've run the half inch spacer on an NL and the tps rubbed the bonnet insulation mat. But i've now got 11R heads and a Trickflow R manifold. Running the trickflow rocker covers, which are a medium height rocker cover, and there is no need for an intake spacer.

Nearly all the aftermarket rocker covers are too tall, but the trick flow ones are a nice height to clear roller rockers, but not too tall to touch the intake manifold.