throttlebody upgrade for zc dohc
 

i've ordered my 2.75 charge piping but now i've been thinking and i wanna upgrade the throttlebody to match so i want to know if there are any tb upgrades that can easily be done that will allow me to use a 65-70mm tb? looking for the cheapest easiest way. this is for my dohc zc. oh also i'll be boring the intake mani inlet to match the diameter of the tb and the i.m. is port matched already

Re: throttlebody upgrade for zc dohc
 

dohc zc bolt pattern is old school and any billet or 92+ throttle body will not bolt on. Only thing you can do is get a factory one bored out to 60mm at the plate. Pm me if intrested has I do this

Re: throttlebody upgrade for zc dohc
 

ok well since there is no easy upgrade and 60 wont do it for me, can i cut the IM at the tb flange and weld on the flange of say a larger tb(the mustang flange) and still have it operate with crome? would it not be properly calibrated or aren't they all 5v at wot, also how can i keep the iacv working correctly because the inlet port for the iacv is on the tb flange

Re: throttlebody upgrade for zc dohc
 

Your want your iacv still you goin to have to make a custom plenum thats it

Re: throttlebody upgrade for zc dohc
 

worse comes to worse make the iacv get its air from its own little breather filter
u gotta make some custom ---- for this

Re: throttlebody upgrade for zc dohc
 

Or try to find a obd1 zc manifold

Re: throttlebody upgrade for zc dohc
 

haha good luck.

Re: throttlebody upgrade for zc dohc
 

whats the difference between an obd0 or obd1 I.M? also how could i re-route the iacv? could i like a remote mounting plate for it with hoses goin into the I.M?

Re: throttlebody upgrade for zc dohc
 

The obd1 manifold has the newer style throttle pattern but like Fooooooooookkkkkkkkk said they motor is damn near impossible to stumble on and the manifold well you may speak to moses before you find one.

Re: throttlebody upgrade for zc dohc
 

i have a obd1 dohc zc it wasnt that hard to find, im looking to put a bigger throttle body on my zc and where i can find one?