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> D-Jet Throttle Bodies, D-Jetronic Modification
TC Johnson
post Jan 4 2005, 03:12 PM
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I have seen ads in Excellence and Panorama for enlarging throttle bodies, and have wondered if anyone has found this to be a successful bolt-on method to increase power on a '76 2.0. My engine is stock with stainless heat exchangers and a Bursch exhaust, and I am looking for small steps, not a giant leap at this time.

Since I know that a bigger throttle body may also decrease drivability, I also wonder if anyone has attempted to adapt a CIS progressive two-throat throttle body to a D-Jet injection system, or a larger throttle body from one of the other cars using D-jet injection.

Another idea that I have not seen are double D-jet throttle bodies on custom intake manifolds. There seem to be quite a few injection systems lying around since many have gone to carbs, so parts would probably be easily acquired.

Discuss!
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Posts in this topic
TC Johnson   D-Jet Throttle Bodies   Jan 4 2005, 03:12 PM
Bleyseng   I did the mod so my TB is a 50mm instead of stock ...   Jan 4 2005, 03:21 PM
ottox914   I called a guy on that "bore out your OEM throttle...   Jan 4 2005, 03:24 PM
Bleyseng   That guy quoted me $250 so I had it done loca...   Jan 4 2005, 03:31 PM
airsix   I went to a 51mm TB and noticed no difference. I o...   Jan 4 2005, 03:45 PM
SirAndy     Jan 4 2005, 04:20 PM
Reiche   My guess is the venturi "smooths" the intake strea...   Jan 4 2005, 07:08 PM
lapuwali  
  Jan 4 2005, 07:42 PM
Reiche   No problem. They were just guesses. How about anot...   Jan 4 2005, 08:11 PM
DJsRepS   Go stick that ol venturi thing where your floats g...   Jan 4 2005, 08:18 PM
airsix   Remember, a venturi does two things. It lowers pre...   Jan 4 2005, 10:57 PM
Bleyseng   Those long runners effect things more than the TB ...   Jan 5 2005, 09:39 AM
TC Johnson   Thanks for all the replies! One thing that se...   Jan 5 2005, 11:02 AM
Bleyseng   The calc's Charles did for me indicate a lengt...   Jan 5 2005, 11:16 AM
airsix   <...   Jan 5 2005, 11:25 AM
Bleyseng   I don't have a running 1.7l to install to do t...   Jan 5 2005, 12:31 PM
airsix   <...   Jan 5 2005, 02:00 PM

 

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