Is the SOHC ZC from a CRX Si?
I think the SOHC ZC is from an 89-91 CRX Si, but I’m not positive on that. I bet the distributor is the problem but before you go out and get another distrib, you might wanna wait till someone else w/ more knowledge and tells you what they think. Are you getting a check engine light? Meaning are you throwing any codes, namely 9-4-15 any of these?
What’s the problem with the SOHC ZC engine?
It was the JDM Si’s that came with the ZC. The answer to your idleing problem is your TPS ( Throttle Position Sensor). Trust me I am having the same problem with my car right now too, and I also have the SOHC zc engine in my car.
Is the throttle body the same as the CRX / Civic Si?
Throttle body is the same as the 88-91 CRX/CIVIC SI The internals of the ZC feature dome shaped pistons and rods that are a little stronger then the CRX/CIVIC SI HKS makes cams for the ZC, here are the specs, 256 degrees intake and exhaust duration, 5.95mm Intake lift, 5.3 mm exhaust lift, they are ground from new billets.
How are the ports shifted on a Honda ZC?
The ZC engine has the ports shifted almost 3 mm (appx 1/8″). In real terms, this means that when you use the SOHC header, the ports do not align properly. The exiting exhaust gases literally run into one edge of the misaligned header flange. You can see this by holding the steel exhaust gasket from the ZC engine up to the DC header.
Throttle body is the same as the 88-91 CRX/CIVIC SI The internals of the ZC feature dome shaped pistons and rods that are a little stronger then the CRX/CIVIC SI HKS makes cams for the ZC, here are the specs, 256 degrees intake and exhaust duration, 5.95mm Intake lift, 5.3 mm exhaust lift, they are ground from new billets.
The ZC engine has the ports shifted almost 3 mm (appx 1/8″). In real terms, this means that when you use the SOHC header, the ports do not align properly. The exiting exhaust gases literally run into one edge of the misaligned header flange. You can see this by holding the steel exhaust gasket from the ZC engine up to the DC header.
When did the Honda CRX Si come out?
In 1988, the second-generation CRX was introduced in North America, and a new Si variant was included right from the get-go. The new CRX Si came a host of new upgrades that further elevated the little buzzbox in the motorsports arena.
Is it possible to find a Honda CRX Si with low miles?
“It is exceedingly difficult to find one with lower miles, no rust, no mods, no crash history,” Newton says “They’ve been dirt cheap forever and could take abuse, so a lot of them did. They’re also 30 years old.” All of these factors are conspiring to give an old friend new life in the premium market.