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Random Sizes Oil Pipe Fittings And Banjo Bolt.

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#1 Moshtaraq

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Posted 29 October 2020 - 06:02 PM

Hi again,

 

I'm in the proces of finishing up my 1330 build and encountered some problems with the banjo bolt. The wrong banjobolt was fitted I think (previous owner just glued it in I guess) Threads seem chewed up in the block. I was looking for the right bolt but can't find it. So I looked at conversion kits, 2 fittings and a braided line. None of the sizes correspond with what I have measured.

 

The measurements:

  • Banjobolt that came with the engine: Thread minor: 14.7mm, major: 15.6mm
  • Hole in block: 16.2mm
  • Oil filter housing fitting: housing side maj 13mm min 12.3mm
  • Oil filter housing fitting: pipe side maj 15.7mm min 14.8mm

Oil filter housing: 12A2032 So I would think 1/4 pipe thread which is 13.7mm but that's not what I'm measuring?

Banjo bolt should be 11/16unf which is around 17.5mm but I have 5/8 I think? It's a post 1992 engine so it should be 11/16 both block and bolt. The hole in the block is 16.2mm so the threads that are completely gone? Should be around 15mm minor, right?

 

The more I look into this the less that makes sense.

 

At this point I'm thinking to buy a conversion kit, drill out the block, tap a bigger thread and buy an extra custom fitting? Or is this saveable with a helicoil?

 

I'm lost!

 

Jens



#2 nicklouse

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Posted 29 October 2020 - 06:10 PM

What year is the block? As there are only two thread sizes in the block. Then we can say what it should have been.

 

ps the measurements will be imperial.



#3 Moshtaraq

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Posted 29 October 2020 - 06:29 PM

It's an A+ 1275 block that's all I know.

WFM 1024 block casting

12g940 head

cam6232 crankshaft

 

I always thought it was post 1990 but I'm beginning to doubt it because for example the oil filter housing is pre 1992.

 

I know that everything should be imperial, that's whats driving me crazy.



#4 alanp

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Posted 30 October 2020 - 05:34 PM

5/8 UNF is the standard size for the banjo bolt hole.



#5 Moshtaraq

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Posted 30 October 2020 - 05:56 PM

exept for after 1992... then it changed to 11/16 unf







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