Lotus Elan

Camshafts original

PostPost by: Mileso » Mon Sep 13, 2021 1:08 pm

Basic query again I'm afraid. Having my S4 on stromberg engine rebuilt. I appear to have SE cams as 1 groove on the disc.

At present the inlet cam is etched as exhaust and exhaust as inlet! Does this matter ie aren't they both the same profile as standard?

Thanks

Miles
Mileso
First Gear
First Gear
 
Posts: 27
Joined: 27 Sep 2020
Location: Cardiff

PostPost by: RogerFrench » Mon Sep 13, 2021 2:39 pm

Etching on camshaft or sprocket?
User avatar
RogerFrench
Fourth Gear
Fourth Gear
 
Posts: 641
Joined: 01 Dec 2009
Location: Richmond, TX

PostPost by: Billmack » Mon Sep 13, 2021 3:33 pm

Doesnt matter as long as the valves are doing the right thing at the right time
Billmack
Second Gear
Second Gear
 
Posts: 207
Joined: 30 Sep 2017
Location: Warren RI

PostPost by: jono » Mon Sep 13, 2021 6:52 pm

I was always of the understanding that Stromberg engines had sprint cams as standard?
jono
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1810
Joined: 17 May 2007
Location: The wet bit in the top corner of England

PostPost by: Mileso » Mon Sep 13, 2021 7:36 pm

Billmack wrote:Doesnt matter as long as the valves are doing the right thing at the right time


I actually had an annoying misfire so the point of my question was were the cams potentially put in wrong at last build, or does it not matter as they are the same profile?
Mileso
First Gear
First Gear
 
Posts: 27
Joined: 27 Sep 2020
Location: Cardiff

PostPost by: ianthomson72 » Mon Sep 13, 2021 9:52 pm

The cams are interchangeable but the sprockets are not. The sprocket marked EX must be fitted to the camshaft on the exhaust side.
ianthomson72
First Gear
First Gear
 
Posts: 24
Joined: 27 Feb 2011

PostPost by: oldelanman » Tue Sep 14, 2021 6:55 am

jono wrote:I was always of the understanding that Stromberg engines had sprint cams as standard?


According to Miles Wilkins book ....

Standard Stromberg engines have "C" type, single groove, S/E cams

S/E Stromberg engines have "D" type, double groove, Sprint cams
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1800
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: rgh0 » Tue Sep 14, 2021 10:19 am

Billmack wrote:Doesnt matter as long as the valves are doing the right thing at the right time


A totally useless post that I expect on other car forums but not here. Ok with a smiley and apology for bad joke but not as a straight statement IMHO, I know chat forum protocol is tricky but.....

sorry to be so negative but pissed off with our continuing lockdown and missing out on my racing :(

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 8009
Joined: 22 Sep 2003
Location: Melbourne, Australia

Total Online:

Users browsing this forum: Vic and 11 guests