Lotus Twincam Engine Modifications
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Thanks for doing this Rohan - thats my bedtime reading sorted!
Matt
Matt
Matthew Vale - Classic Motoring Author
1968 Plus 2 - Somewhat cosmetically and mechanically modified
1969 Plus 2S - Currently undergoing nut and bolt restoration
Visit me on matthewvale.com
1968 Plus 2 - Somewhat cosmetically and mechanically modified
1969 Plus 2S - Currently undergoing nut and bolt restoration
Visit me on matthewvale.com
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Matt Elan - Fourth Gear
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- Joined: 27 Oct 2011
Back from my holiday in Europe and managed to finish Chapter 8 - Building a good breathing cylinder head. See the attached PDF file below
Now I need to finish chapter 9 about all the ancillaries that need to be considered to ensure your modified engine is reliable while finshing my current engine build and before I do some Skiing in Australia and head back to Europe for some more summer...... I am enjoying my retirement
cheers
Rohan
Now I need to finish chapter 9 about all the ancillaries that need to be considered to ensure your modified engine is reliable while finshing my current engine build and before I do some Skiing in Australia and head back to Europe for some more summer...... I am enjoying my retirement
cheers
Rohan
Last edited by rgh0 on Tue Jul 04, 2023 8:37 am, edited 1 time in total.
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rgh0 - Coveted Fifth Gear
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- Joined: 22 Sep 2003
Thanks Rohan, a great resource. Have enjoyed reading each chapter.
Skittle. 1967 Elan S3 DHC
- skelteanema
- Third Gear
- Posts: 249
- Joined: 11 Dec 2003
good clip on valve float
https://www.youtube.com/watch?v=_REQ1PUM0rY&t=20s
though I wonder if it keeps the valve seats clean no carbon buildup eh
https://www.youtube.com/watch?v=_REQ1PUM0rY&t=20s
though I wonder if it keeps the valve seats clean no carbon buildup eh
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
Find out where the limits are, and start from there
Love your Mother
Earth
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h20hamelan - Coveted Fifth Gear
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- Joined: 25 Sep 2010
[email protected] wrote:Does anyone in this Forum got any informations about IWR camprofiles ?
I have a nice pair IWR 155 cams - 11,1mm lift - 7/16" camlift
Best regards , Roger
I have never seen details but given the lift and age of the cam it will probably be a long duration of about 310 to 320 degrees seat to seat and only usuable in a full race engine
cheers
Rohan
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rgh0 - Coveted Fifth Gear
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I have posted a copy of the Feb 24 version completed file to my one drive account. The link below will give you access so you can download it.
https://1drv.ms/f/s!AoF1R127qyczgrlv141 ... g?e=bz6oeI
I am exploring options to make it avaiable in printed form at cost for those who like a physical book
cheers
Rohan
https://1drv.ms/f/s!AoF1R127qyczgrlv141 ... g?e=bz6oeI
I am exploring options to make it avaiable in printed form at cost for those who like a physical book
cheers
Rohan
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rgh0 - Coveted Fifth Gear
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Thanks for making the PDF available, I've downloaded it and am amazed at how much detail you've packed in there. Stunning work.
Having read your previous files I reckon that a print-on-demand would work. It's probably a smaller market than we all think but there's so much information in there that anyone serious about building their own engine is going to want a copy. It's a bit like Miles' book, it sits on the shelf for years and then suddenly you need it.
If you do get a deal to print on demand I'll cross post the link on to the Europa forum & io group as well.
Brian
Having read your previous files I reckon that a print-on-demand would work. It's probably a smaller market than we all think but there's so much information in there that anyone serious about building their own engine is going to want a copy. It's a bit like Miles' book, it sits on the shelf for years and then suddenly you need it.
If you do get a deal to print on demand I'll cross post the link on to the Europa forum & io group as well.
Brian
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UAB807F - Fourth Gear
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Yes its going to be a small specialist market and I am not looking to make money on it. But there were about 40,000 Twincams made and not many of them are still totally standard!.
I would like a copy on my shelf also so i will sell at least 1 . The Amazon print to order option does not seem too difficult and i will work through that as i get time. Just need to design a good cover page and do all the other bits they want added.
cheers
Rohan
I would like a copy on my shelf also so i will sell at least 1 . The Amazon print to order option does not seem too difficult and i will work through that as i get time. Just need to design a good cover page and do all the other bits they want added.
cheers
Rohan
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rgh0 - Coveted Fifth Gear
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But there were about 40,000 Twincams made and not many of them are still totally standard!.
I think mine is !
Seriously though I'd like to add my thanks to the many heading your way not only for the 'book' but all your contributions to the forum - always good humoured unlike some ! There should be a forum rating higher than the five gears - maybe a gold star!
- Baggy2
- Third Gear
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rgh0 wrote:Yes its going to be a small specialist market and I am not looking to make money on it. But there were about 40,000 Twincams made and not many of them are still totally standard!.
I would like a copy on my shelf also so i will sell at least 1 . The Amazon print to order option does not seem too difficult and i will work through that as i get time. Just need to design a good cover page and do all the other bits they want added.
cheers
Rohan
Thankyou for sharing this Rohan, and well done, it's great information all in one resource! I look forward to hearing progress being made on a printed version and the process of how you go about such a thing!
Regards.
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promotor - Fourth Gear
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