1974 1.8L FI Vacuum hoses? |
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1974 1.8L FI Vacuum hoses? |
JeffBowlsby |
Dec 10 2010, 10:21 AM
Post
#1
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914 Wiring Harnesses Group: Members Posts: 8,521 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Which of these two diagrams is correct...the top or bottom one?
The difference is the hoses at the dizzy vacuum can...they cannot both be right. [NOTE: I deleted the incorrect diagram originally posted...the diagram remaining is the correct configuration] Attached image(s) |
zonedoubt |
Dec 10 2010, 04:05 PM
Post
#2
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
I think this discussion would benefit from identifying the differences between the throttle body part numbers. The PET calls for these P/N's for the 1.8L engines:
022 133 062 H throttle body <= M EC0 037 551 914-1,8 022 133 062 R throttle body >= M EC0 037 552 914-1,8 022 133 062 L throttle body <= M EC0 037 551 914-1,8 (CAL) 022 133 062 S throttle body >= M EC0 037 552 914-1,8 (CAL) I have a couple of TB's. The one installed on my '75 1.8L has only one rear-pointing vacuum port (P/N ends with 022 133 067C, IIRC). A hose goes from the rear port to the left side of the dizzy. So pretty much the same as diagram #2 except with a short piece of hose off the right side of the dizzy can "breathing to the wind". (I also have a tee off the TB to dizzy can hose that goes to the EGR valve.) It runs well and passes emissions no problem. I have another 022 133 067A (that was pulled off a '75 1.8L L-jet) with two vac ports that I'm contemplating trying out to see how things run with the dizzy can retard port connected. Maybe the p/n's ending in "067" are VW Bus TB's? (IMG:style_emoticons/default/idea.gif) |
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