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Measurement of 4.4 manifold spacers

Tech Talk for Rover owners.

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Measurement of 4.4 manifold spacers

Post by TuffRR »

Could anyone running a 4.4 and using manifold spacers measure the thickness of the spacers for me. Mine measure exactly one inch but i have a suspicion that they are a little bit too high because i am having some issues having the injectors line up without having the spacers out too wide and causing the rocker covers to not seal properly.

Thanks. :)
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Post by Ralf the RR »

Just measured mine, and the best I can get is 18 or 19 mm.
It's hard to measure with all the crap in the way, but they are way less than 1 inch.

I'm running an original Rover manifold with twin carbs.
Harry

79 Rangie (his name is Ralf) 4.4 dual fuel, with plenty of other mods.

Oils leaks are a factory option to prevent rust!
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Post by TuffRR »

Ralf the RR wrote:Just measured mine, and the best I can get is 18 or 19 mm.
It's hard to measure with all the crap in the way, but they are way less than 1 inch.


Thanks for that, i gave up with the tape measure, got a bit string and did it that way. ;)
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Post by Ralf the RR »

TuffRR wrote:
Thanks for that, i gave up with the tape measure, got a bit string and did it that way. ;)


I used a set of vernier calipers with a depth gauge.
A PITA with all the hoses and stuff in the way, but at least it's a ball park figure.
Getting the angle right was also difficult.

As an aside, my spacers are held in with allen screws.
I have just replaced an exhaust valve, and have cured a vacuum whistle due to some of the allen screws being loose.
They are now loctited.

I manufactured new inlet manifold/spacer gaskets and found that the manifold blocks off water galleries.
This could be due to mine having rover heads instead of P76 heads.
Harry

79 Rangie (his name is Ralf) 4.4 dual fuel, with plenty of other mods.

Oils leaks are a factory option to prevent rust!
Posts: 1119
Joined: Mon Dec 16, 2002 4:24 pm
Location: Neither here nor there

Post by TuffRR »

Ralf the RR wrote:I manufactured new inlet manifold/spacer gaskets and found that the manifold blocks off water galleries.
This could be due to mine having rover heads instead of P76 heads.


Yep, I'm running Rover heads and it does the same. P76 heads must be different.
Range Rover - 4.4 V8, MD Crawler Box, F&R Lockers, 35" Centipedes, 4" lift. Overqualified WebWheeler!!!

Discovery - Bling touring stuff!
Posts: 1119
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Location: Neither here nor there

Post by TuffRR »

Does anyone else have the manifold spacers? I just want to confirm mine are too tall (not that i dont believe you Ralf). The EFI ones should be the same as the carby ones I'd imagine.
Range Rover - 4.4 V8, MD Crawler Box, F&R Lockers, 35" Centipedes, 4" lift. Overqualified WebWheeler!!!

Discovery - Bling touring stuff!
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