Stromberg Thoughts...
Posted: Fri Mar 11, 2011 7:09 pm
I have been reading about Keith Franck's exploits on improving the tune of the Weber carbs - very impressive.
I also know that for the dear old Stromberg head (count my +2 car in on that) there is a ceiling on the amount of air you can get through the head, so you are effectively limited to about 130 bhp with a following wind and a high compression setup (200psi on the pistons).
My setup with a low compression head (170psi) runs very smoothly, with CLP2 cams and richer needles. Acceleration is also smooth with no hesitation or misfires once warm. My only measure of performance is a 50 to 70 time of 4.5 seconds in 4th gear on a 4 speed - whatever that means.
I think I have gone as far as I can without changing to Webers. I have a small bore manifold but am not sure if going to a larger bore is worthwhile.
I am happy enough, but wondered if there have been any developments or ideas around apart from upping the compression.
Dave Chapman.
I also know that for the dear old Stromberg head (count my +2 car in on that) there is a ceiling on the amount of air you can get through the head, so you are effectively limited to about 130 bhp with a following wind and a high compression setup (200psi on the pistons).
My setup with a low compression head (170psi) runs very smoothly, with CLP2 cams and richer needles. Acceleration is also smooth with no hesitation or misfires once warm. My only measure of performance is a 50 to 70 time of 4.5 seconds in 4th gear on a 4 speed - whatever that means.
I think I have gone as far as I can without changing to Webers. I have a small bore manifold but am not sure if going to a larger bore is worthwhile.
I am happy enough, but wondered if there have been any developments or ideas around apart from upping the compression.
Dave Chapman.