Originally Posted by Vampire
hi guys you seem to know ya zvh's!
ive got a standrd rs turbo running standard boost(how much boost is that?)
im going to take the engine out as it needs an overhaul as its getting very unpredicatable and a general poor drive.
while it was out i wanted to slap the mondeo 2litre bottom end on, my questios are, do i have to have a de-comp plate to lower the compression ratio, and do i have to bore the 2 litre to 2.1 to get it to work?
All depends on how much money you have ?
The proper way would be re bore and over size low comp pistons.
however ?
The cheap way is to get a 2.0 bottom end (with a 1.8 sump and pick up) will then fit direct to your CVH head (with the de-comp plate) Mad for it do a full kit, as you need to drill and tap a few holes, for the oil pump.
The De-comp plate allows boost at around 14-15psi (1bar) max. I have now fitted the de-comp kit to the black top ford 2.0 ford bottom end, and it run's 13/14psi and gave a very good, 206bhp, with 222lb of torque. (works well but already i want more boost) so the 2.1 would have been a better idea. (its each to there own really)
Speak to Mad for it, and they will update you on all requiremets on the De-comp plates and whats needed. good luck.