850 Cylinder head

laurentdom

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Joined

Nov 30, 2012

Messages

258

• May 6, 2023

• #1

Hi All,

I'm about to search a second hand 850 cylinder head. Is there one RHx better than others in terms of pure quality (no porosity, no weak point...) not performance?

Thks for your help,

Laurent

 

Dan1950

1974 MK II Roadster

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Joined

Aug 19, 2021

Messages

1,466

• May 6, 2023

• #2

laurentdom said:

Hi All,

I'm about to search a second hand 850 cylinder head. Is there one RHx better than others in terms of pure quality (no porosity, no weak point...) not performance?

Thks for your help,

Laurent

Click to expand...

RH10

 

kommando

Joined

May 7, 2005

Messages

7,817

• May 6, 2023

• #3

RH10 has better inlet guide support, as for porosity that is still a lottery with all 850 heads. Sellers know the RH10 is preferred so expect the pricing to reflect this.

 

Torontonian

Joined

Dec 28, 2009

Messages

5,632

• May 6, 2023

• #4

I use RH 10 .
But nothing wrong with using the RH 4 850 head .
Just don't get too experimental with it .
Enjoy .

 

laurentdom

VIP MEMBER

Joined

Nov 30, 2012

Messages

258

• May 7, 2023

• #5

Thks gents. I'll focus first on RH10.