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Old September 29th, 2016, 04:59 AM   #1
Amber 74
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Default Proper Deck hight.

I'm reringing my 74 1600 dual port with stock size pistons and see in all how to build articles and videos to make sure and set proper deck hight but can't find what the proper specs are. What is the specs for this ? There were no shims under my jugs when I tore this engine down. Thank You .
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Old September 29th, 2016, 07:47 AM   #2
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Default Re: Proper Deck hight.

Measure what you have, IIRC, I think it should be around .040".
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Old September 29th, 2016, 03:43 PM   #3
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Default Re: Proper Deck hight.

too much is a problem.

If the motor is stock, the easy answer, is assume the factory had a clue.
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Old September 30th, 2016, 04:37 AM   #4
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Default Re: Proper Deck hight.

Motor has been rebuilt with 85.5 Mahle pistons. There were no shims under jugs. Pistons are being cleaned for reassembly to check what deck hight is now. was told to set hight at .125 to be safe. Is this too much ?
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Old September 30th, 2016, 05:06 AM   #5
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Default Re: Proper Deck hight.

If it was running ok before the re-ring and all you did was replace the rings, I'd just put it back together. I'm no engine "builder" however.
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Old September 30th, 2016, 07:57 AM   #6
Unkl Ian
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Default Re: Proper Deck hight.

.125" is WAY too much.
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Old October 3rd, 2016, 04:40 AM   #7
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Default Re: Proper Deck hight.

Had a vw tech tell me .075. Not sure what to set it at. May wait on new stock heads and cc them.
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Old October 3rd, 2016, 07:52 AM   #8
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Default Re: Proper Deck hight.

You're doing things the right way by asking questions and taking your time. Which, is turning you into an "engine builder."
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Old October 5th, 2016, 07:25 AM   #9
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Default Re: Proper Deck hight.

I think I'll wait until I get new heads and cc them to be safe and ask again .
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Old October 6th, 2016, 01:50 PM   #10
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Default Re: Proper Deck hight.

CC your heads, and then do a compression calculation. Stock cam try to keep it at less than 7.5:1. With a 110 cam I lake to be at 8:1...
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