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Quick 13c to 15G question

N

nedc

Member
Joined
Mar 22, 2003
Location
Manning, SC
I'm having a bitch of a time getting the water/oil line banjo bolts started on my 15G swap (940T was a 13c). The 15G I'm using did not come with banjo bolts and I assumed the ones from the 13c would work so i did not try them on the bench. Now that the 15G is on the car and it is awkward to start those bolts anyway, I'm wondering if they are the same? What say ye?
 
I (at risk of being flamed) feel like they are a direct swap when clocked. Threads should be same across TD04 fam i think? biggest i went was 15g, cant speak for the 19t or better guys.
 
Same but the water holes could be in a different spot. There are two different water line holes on the center section, if your 15g has the other holes tapped and drilled it can be hard to make that work with the 13c hard water banjo lines. Are you having trouble getting them started? The oil feed can be hard to do. Loosen the oil feed where you banjo bolt it into the block might help other then that you gotta get the banjo part of the oil feed squared up to the turbo hole properly or it's hard to get started. I've had luck using a thin walled socket to get them started. That way you can push down on the banjo bolt and turn it also..

IMG_0296_zpsctk4lqwl.jpg
 
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Just to follow up- I finally got the banjo bolts in. Turns out the water port threads had a bit of rust buildup, so I oiled up the bolts and threaded them in without the fittings first, after that they went on pretty easy. The oil feed just took a lot of pushing and bending. I have to say, I was expecting a bit more of a jump in performance with the 15G, but it was not as much as I expected. This is a stock exhaust 940T w/ thelostartof chips. I also ported out the manifold and the exhaust housing. A little bit more lag, but the engine does seems to breathe easier I guess. Wasn't a waste of time, because the 13c manifold had blown out one of the exhaust gaskets anyway.
 
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