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Originally Posted by tony2fingers
Jake, thanks for the quick reply. The ims was just trash when i got around to looking at it. dont know the reason, but most likey the same reasons that they all go bad i guess. not enought oil and poor design. Just my bad luck that i found out about it after i got the heads and everything on and couldnt get the rough timing in since the ims was slipping btween the sprockets.
Yes, i pulled all three tentioners before i started work on it. I made this post before i checked out your websight and after reading up and looking at the install steps you have pictured, i think i can wiggle my way in. the note about using gravity is very usefull.
Just a shame that you have to spend over a grand in tools to get it assembled correctly though. i may just take it to a shop like yours and pay to have them assembled. thanks
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Few Porsche shops have correctly assembled these engines .. You can count on both hands how many people in this country have done complete builds without having issues with them, including dealerships..
We rent the assembly tools and will be providing them with our rebuild/ update kit program soon.
To answer your qquestion, the tool is NECESSARY to set the cam timing as the positions of the cams changes when torquing the units into place.. You cannot just eyeball it and hope for the best, its not that simple.
I have done this without tools, using the split overlap method of degreeing the camshafts, to do this you'll need some experience, a degree wheel and a dial indicator.
DO NOT reinstall that IMS without upgrading it's bearing or the entire shaft.. Doing so when you are so close to the assembly is just not smart and you'll pay the price when you become a statistic...
The IMS issue is not as much of a design issue as a material and application issue. We have the retrofit bearing you need.
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