So I removed all the heater tubes and elbows from the heat exchangers months ago when I dropped the engine for oil leak remediation. Had them stripp d and such at the shop that dipped the two deck lids. Now I need to put it all back together, and it looks like a big, raw steel jigsaw puzzle. Does anyone have a diagram or guide as to how it all goes together?
It's actually very self explanatory once you start putting it together. Except for possibly the front top covers that attach the branch pieces to the impeller housing it will only go together one way.
Before you do any painting, check the threaded holes and clean them up with a tap. Some times you have to weld in new nuts. The J-tubes are notorious for having tabs with weld nuts missing.
RTFWSM. Nice diagrams there.
I guess I’ll need to look through the factory manuals again. I didn’t see any diagrams of the heater tubes in the pdf version I have.
I found PET to be helpful.
This is a big PDF, you'll have to scroll a bit to find it, but the exhaust diagram is in there.
https://www.porsche.com/all/media/pdf/originalparts/usa/914_USA_KATALOG.pdf
Get new grommets/seals for the j-tube tin holes and the clamping pieces (#s 17&18). 914 Rubber has them.
These diagrams and pictures will help immensely. Thanks, people!
this is the piece on drivers side considered a warm air guide- i just put this jn , but it was a bit tight and had some rubbing on the shift bar- it shouldnt but if it does then you will need to make a bit of a modification- but easily removed - there is a similar one for the other side too- btw that will look nice with all your new clean bits installed! please take some pictures after you are finished!
Attached thumbnail(s)
How hot do these pieces get? Do I need BBQ or engine paint? Not excited about the possibility of burning paint fumes in the interior.
this was powder coated black so no worries there - but yes I would imagine they get pretty hot, so if you paint, use the BBQ or equivalent type paint
yep, sorry i posted the wrong picture Dave, thanks for the correction! i have now the correct one from Rhodyguy. of course since i had the original stuff for 75 on there when i first got the car, and it was shot and had to be pulled, i made the change to the earlier HE, but didnt know i was missing those until much later as well. only recently did i try and source the proper ones and didnt know the difference between the tail and side shift guides. it will work but it did get contact with the shift bar and now i know why .
always learning! ( i did get a 19/25 on Clay's tec quiz and 5/6 on tie break questions- not too bad and i learned some stuff too.
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