Whats up guys, I have another problem thats blowing my mind. I Have a vitara/tt rod combo and was told its a non interferance engine. The t-belt broke on me while the car was idling, I did not try to start the car after the belt slipped. I installed a t-belt, fired it up and found it was running on 3 cylinders. did a compression test and got 150psi in cylinders 4,3,2, but in cylinder 1 i got zero! Was it possible to bend a valve with a vitara/tt rod setup? I didnt think so, so I replaced the head with a known working head with new headgasket and arphead studs and still got the same results. valve lash was set. i can feel that cylinder building pressure with the sparkplug removed but for some reason its not sealing. any suggestions?


btw the head that i removed i installed a sparkplug in cylinder #1 and sprayed brake cleaner in that chamber. It held the fluid leading me to belive that the head is still good?

 

Whoever told you that your motor is non-interference is an idiot.

 

did you check cylinder 1 for damage when you had the head off? rings stuffed? bore stuffed?

It has to be block related if the second head you used was "known good"

 

actually it is a non interferance motor, well according to what ive read on d-series.org.. vitara users had the snapped timing belt incident and there valves was just fine. its because the pistons sit below the block.


As for my problem it was the valve lash. I set the intake .007 and exhaust to .009 and she fired right up. The lash was off by a little bit, i would of never thought it would of caused zero compression, atleast have SOME compression. Now i have the same compression in every cylinder! hopefully this will help someone in the future!

 

Who said that on d-series?

Just because the valves aren't bent after the timing belt fails, doesn't mean the engine is non-interference.

 

The Vitara engine is non-interference, but the D-Series is interference. You can take the pistons out of the Vitara and throw it in your Honda, but that doesn't magically make your Honda a non-interference engine afterwards.

 

This would not be a question if someone had clayed the motor when it was being put together. vitara's sit and extra .030 in the hole corect? on top of having huge valve releafs. it would be hard to imagine that they would hit, is it posible you have a problem with the cam and thats why the t belt broke?

Just a few thoughts

 

you sure the pistons were good? maybe a hairline crack somewhere?