QUESTION
I have L2 camshafts in my Lotus Elan +2 and have been competing in Targa Tasmania events.
I no longer wish to use the Lotus Elan +2 for competition events and I find the engine lacks low end torque when driving under normal road conditions.
Can you recommend how I can solve this problem by changing over the camshafts?
B.W. - Tasmania
ANSWER
After considering your request to replace the L2 camshafts in your Lotus Elan +2, be aware there are limitations if a change over camshaft solution is desired.
Without removing the cylinder head and checking the valve springs and determining the piston to valve clearance at TDC, there are dimensional constraints.
There are alternative camshafts that provide slightly more lift and are short duration but are not suitable if you are using standard valve springs with an installed height of 1.250"
Depending on what literature you refer to, L2 camshafts only have 0.354" lift and this is why they will operate successfully with the standard pistons and valve springs.
Whilst the L2 cams allow the Lotus twin cam engine to develop more power at high rpm, the down side is low end torque is severely compromised
If you are looking for an engine that has low-end drive-ability then installing camshafts with the original Lotus specifications would be a cost effective solution.
Copyright © 2014 Lotus Marques
I have L2 camshafts in my Lotus Elan +2 and have been competing in Targa Tasmania events.
I no longer wish to use the Lotus Elan +2 for competition events and I find the engine lacks low end torque when driving under normal road conditions.
Can you recommend how I can solve this problem by changing over the camshafts?
B.W. - Tasmania
ANSWER
After considering your request to replace the L2 camshafts in your Lotus Elan +2, be aware there are limitations if a change over camshaft solution is desired.
Without removing the cylinder head and checking the valve springs and determining the piston to valve clearance at TDC, there are dimensional constraints.
There are alternative camshafts that provide slightly more lift and are short duration but are not suitable if you are using standard valve springs with an installed height of 1.250"
Depending on what literature you refer to, L2 camshafts only have 0.354" lift and this is why they will operate successfully with the standard pistons and valve springs.
Whilst the L2 cams allow the Lotus twin cam engine to develop more power at high rpm, the down side is low end torque is severely compromised
If you are looking for an engine that has low-end drive-ability then installing camshafts with the original Lotus specifications would be a cost effective solution.
Copyright © 2014 Lotus Marques