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Using Poly Carbonate, Engine Oil, Vaseline and a graduated syringe the volume of the piston dome is measured, and used for the calculation of the static compression ratio.
The deck heights for all the pistons were measured. These measurements were then used to determine how much machining was needed to ensure all the deck heights were correct and even.
Once all the machining was complete the process was then to install all the pistons and then, using curil T, install the pistons and cylinders. Curil-T was used as I didn’t use cylinder base o-rings in this build.
Cylinder in place, nice amount of squeeze out of the Curil-T ensures a proper seal.
Great detail shot of the Supertec Head Studs... These are just stunning pieces . Finer thread on the nut end for more even torque and better holding.
Timing the Cams..... AS in another thread, this is a slow and laborious process, I should have timed how long it took, the initial setup took a few hours untill I was happy that I had the correct procedure and It was repeatable. I would set it up, rotate the engine, take the tools off, move the enginr to TDC and setup the tools again, just to make sure I was doing it right. Then rise and repeat for the other side...
Setting timing with a Z Block and Dial Gauge.
Timing almost complete, gratuitous Clewett RSR belt kit pic and Red fan
Timing the Cams..... AS in another thread, this is a slow and laborious process, I should have timed how long it took, the initial setup took a few hours untill I was happy that I had the correct procedure and It was repeatable. I would set it up, rotate the engine, take the tools off, move the enginr to TDC and setup the tools again, just to make sure I was doing it right. Then rise and repeat for the other side...
Setting timing with a Z Block and Dial Gauge.
Timing almost complete, gratuitous Clewett RSR belt kit pic and Red fan
I noticed that you have a device to keep tension on the chain ramps. Where did you purchase them and how much tension did you crank them down to. Wondering why you didn't simply utilize the factory tensioner on them? Just trying to educate myself. Thanks
I built almost identical engine for my '95. Schrick cams and Mahle pistons though. Great throttle response. Did you use RS 4.0 flywheel?
Just the RS flywheel, in hind sight I should have forked out for the RS 4.0 Flywheel. The transmission will be coming out for a rebuild in the near future so I will probably do it then.
The engine is super responsive as it is (ITB's help alot here) But the few extra pounds reduction would have been nice.
Originally Posted by 0396
I noticed that you have a device to keep tension on the chain ramps. Where did you purchase them and how much tension did you crank them down to. Wondering why you didn't simply utilize the factory tensioner on them? Just trying to educate myself. Thanks
The porsche tools are too expensive so I made the tools myself, some 1/2" x 3/4" aluminum bar, drilled and tapped. I like this as there is no potential movement at all. Tension was just to snug, I didn't measure the torque on it.
05-11-2016, 05:29 PM
. Finer thread on the nut end for more even torque and better holding.
........................very nice
