|1.8L GSi Cam Swap|
I installed the 1.8L GSi Cams. Was an easy swap-well it was real easy with the engine out of the car, only took 15 minutes.
UPDATE: I swapped out the 1.8L GSi cams and the RS solid lifters and installed the IMARK cams and hydraulic lifters. The engine is a lot quieter now, but I am a little dissapointed in the performance at this point.
Here is all the information I have on Isuzu Camshafts:
*Note that the lobe heights listed here are the MINIMUM heights to be within Spec. Actual lobe heights may be higher.
||Lift (Lobe height)
|1989 1.6L DOHC (I-Mark RS)
|1990-92 1.6L SOHC
|1993 1.6L SOHC
|1990-91 1.6L DOHC
|1991 1.6L DOHC Turbo
|1992-93 1.8L DOHC
Understanding cam specs and their affects will help you select the best cam for your specific engine. The four important camshaft specs to understand are duration, lift, centerline, and separation.
Duration refers to how long a valve is opened in relation to crankshaft rotation. This open valve time period is expressed in degrees of crankshaft rotation. So, a cam specification of 244 degrees duration simply means the cam holds the valve open for 244 degrees of crankshaft rotation.
As a gene