Volvo Owners Club Forum - View Single Post

Salop Farmer · May 19th, 2022, 18:06

I was wondering if anyone has data on B18 compression ratios. The information I would like is the head thickness for various compression ratios up to 11:1.
I am fully aware that combustion chamber volume is the true way to establish CR but I have a couple of heads, that when measured with a micrometer are significantly different in thickness. I presume one has been skimmed. As I am in the process of building an engine for my 544 I would like it to be tuned for fast road ( as they say!). I already have a D cam and followers and a set of KD needles for carbs. A 10:1 ratio sounds about right for this set up. If anyone has an approximate head thickness dimension for this CR I would be very grateful. Thank you in advance.

May 19th, 2022, 18:06	#1
Salop Farmer Member Last Online: Today 15:28 Join Date: Feb 2019 Location: Oswestry	Volvo B18D compression ratios. I was wondering if anyone has data on B18 compression ratios. The information I would like is the head thickness for various compression ratios up to 11:1. I am fully aware that combustion chamber volume is the true way to establish CR but I have a couple of heads, that when measured with a micrometer are significantly different in thickness. I presume one has been skimmed. As I am in the process of building an engine for my 544 I would like it to be tuned for fast road ( as they say!). I already have a D cam and followers and a set of KD needles for carbs. A 10:1 ratio sounds about right for this set up. If anyone has an approximate head thickness dimension for this CR I would be very grateful. Thank you in advance.