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Discussion Starter #1
Had a bit of a nightmare this weekend having the timing belt changed. A few things didn't add up so a big thanks to zealou5 who were able to find the issue over the phone.

Long story short, the thing that was causing problems was that the key in the CAS should align with the key in the exhaust cam but unfortunately it had previously broken off without my knowledge.

Something that concerns me though is how the original timing belt seemed to be fitted. The specialist garage that I went to marked the belt's positions and it seemed like the crank was out by 1 tooth. When put back together in this position, with the new belt, the car was just backfiring and wouldn't start. Definitely a timing issue but the thing is, this was because of the CAS key problem as mentioned above. The garage decided that this was definitely a timing issue and subsequently set the exhaust cam and intake cam to their standard positions when setting timing along with the crank at top dead center. They then fitted the belt again and we tried to start up; again backfiring but this would be because of the CAS not aligned properly again.

So, once again, with thanks to Zealou5, I was able to get on my way home after spending the day on the timing belt. The concern I have now though is whether the belt should have been put back on in the standard position if the engine builder had intended it to be out by 1. The car seems to be driving fine but I could swear it's coming on to boost later now but this could just be because I was driven around in an R35 GTR which possibly isn't as fast as mine but has next to no lag!

I understand that the symptoms of a tooth out by 1 are usually very very poor engine running and possibly even not being able to start. She runs boost fine right now and idles normally etc but this just confuses me a little because I can't see how this scenario can work. Both times, the garage were able to fully rotate the crank twice to ensure that there was no interference. Could it be that the markings were just done incorrectly as the crank/gears may have turned whilst doing them?

Any thoughts/feedback would be great.. pretty perplexed!!
 

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Discussion Starter #3
Yes, HKS cam gears; they weren't touched, for certain. She's going to see Steve at FC tuning in the next few weeks so maybe he can look at the cam timing for me. I've no idea how that even gets set up.
 

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Our pleasure Chris, you sounded a bit stressed on the phone, just wish you were closer and we weren't so busy then we could have done the job for you.

:)
bob
 
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