Lotus Elan

Q420 camshaft question

PostPost by: 2cams70 » Tue Mar 12, 2024 1:01 am

Andy gets the grumpy old uncle award with consolation prize going to Rohan.

Craven gets a point toward membership of the honorary grumpy old uncle life membership award.
1970 Ford Escort Twin Cam
1972 Ford Escort GT1600 Twin Cam
1980 Ford Escort 2.0 Ghia
Peugeot 505 GTI Wagons (5spdx1) (Autox1)
2022 Ford Fiesta ST.
2cams70
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2217
Joined: 10 Jun 2015
Location: Australia

PostPost by: rgh0 » Tue Mar 12, 2024 1:15 am

I will try to do better next time so I can get into first place. :lol:
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 8993
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: ill_will » Fri Mar 15, 2024 6:47 pm

Interesting discussion, thanks for doing the maths!
ill_will
Third Gear
Third Gear
 
Posts: 248
Joined: 18 Apr 2008
Location: SE London, UK

PostPost by: h20hamelan » Sun Mar 17, 2024 5:08 am

Very interesting, and everyone learning and progressing still after 70 years eh!
Thanks :D
Born, and brought home from the hospital (no seat belt (wtf)) in a baby!
Find out where the limits are, and start from there
Love your Mother
Earth
User avatar
h20hamelan
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2086
Joined: 25 Sep 2010
Location: RACECAR spelled backward, is——RACECAR! Kayak, Kayak. The Faster You Drive...The Slower You Age

PostPost by: rideaway » Sat Mar 23, 2024 7:35 am

Hello to you all, and to grumpy old uncles too :lol:
This is interesting for me as I have for a while been thinking of doing this job with 420 lift cams on my standard sprint. if there are no more complex issues machining etc etc and you get good results I will do it.

For around a grand it seems like a good power improvement

This post will await your result


I'd be happy to give feedback on how the engine works with the QED 420 camshafts, but you'll have to wait a bit!

20240106_150108.jpg and



To come back to the subject of determining TDC, without this inflaming the debate like the doughnuts and CVs, I tried several methods by demonstration (calculations bore me) according to your different opinions.
First of all, I don't know if my pistons have an offset pin (QED/Omega forged std), I didn't want to dismantle the lower engine to check.
But the result is that TDC always ends up in the same place, plus or minus 0.5°. I don't think that the method is decisive to have an accurate TDC, in this case for a street engine.
The engine assembly is complete and will be re-installed in the chassis this weekend. I'm thinking of starting it up to check that everything's OK before reassembling the body.

Regards
Stéphane
User avatar
rideaway
First Gear
First Gear
 
Posts: 46
Joined: 21 Aug 2022
Location: Switzerland
Previous

Total Online:

Users browsing this forum: No registered users and 14 guests