pkw2704 Posted October 5, 2021 Share Posted October 5, 2021 long shot ,anyone got one stuck in their garaged unloved they want rid of ?? landed my first caterham after a very long wait (30yrs) and the upgrade bug is starting to bite Link to comment Share on other sites More sharing options...
Roger Ford Posted October 5, 2021 Share Posted October 5, 2021 Got a standard 4 into 1 manifold, but I guess that's not what you're looking for. Link to comment Share on other sites More sharing options...
pkw2704 Posted October 5, 2021 Author Share Posted October 5, 2021 I have the caterham 4-1 (standard) already so dont think its what i am after.is yours standard single pipe out of the side or 4-1 primaries outside the car? Link to comment Share on other sites More sharing options...
Roger Ford Posted October 6, 2021 Share Posted October 6, 2021 Single pipe outside, so presumably the same as you have. Link to comment Share on other sites More sharing options...
pkw2704 Posted October 6, 2021 Author Share Posted October 6, 2021 yep Link to comment Share on other sites More sharing options...
TomB Posted October 6, 2021 Share Posted October 6, 2021 Worth extending your request to the 4-1 race exhaust that has long primaries. It has a slightly different effect over the 4-2-1 manifold, in that it is mainly of benefit at higher engine speeds, and the 4-2-1 helps in the mid range more. However, its a big improvement over the standard. Link to comment Share on other sites More sharing options...
Wrightpayne Posted October 7, 2021 Share Posted October 7, 2021 I used to have a 4-1 external collector exhaust and found this turned towards the ground where the four pipes exited the body meaning the silencer was low and grounded quite often.I changed to a 4-2-1 VHPD system which turns straight / parallel to the ground as it exits the side skin meaning the silencer is slightly higher and rarely grounds (usually only when 2 up and hit a bad bump or speed bump too fast) Link to comment Share on other sites More sharing options...
pkw2704 Posted October 8, 2021 Author Share Posted October 8, 2021 the full vhpd system was the one i was looking at Link to comment Share on other sites More sharing options...
revilla Posted October 14, 2021 Share Posted October 14, 2021 Might have something of interest to you. Can you BM me your email address and I'll send you details. Link to comment Share on other sites More sharing options...
pkw2704 Posted October 14, 2021 Author Share Posted October 14, 2021 Sent Link to comment Share on other sites More sharing options...
revilla Posted October 14, 2021 Share Posted October 14, 2021 Received & replied. Link to comment Share on other sites More sharing options...
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