Perkins M30 Compression issue

[nsailscal334]

We have an 1995 (or so) Perkins Perama M30 that needs a compression test. The challenge is that due to the configuration of the injector ports the stock compression fittings from the test kit are not long enough. We need an adapter and a thorough search (including Perkins dealers on both coasts) has not been fruitful. Ive attached a picture showing the difference between the injector (with blue paint) and the stock compression fitting and one can see the difference in length which makes it impossible to seat the stock compression fitting properly.

Has anyone out there had any success performing a compression test on this engine of about this era? And if so, how were you able to get the compression test fitting to fit? Is there an adapter out there we haven't been able to track down yet?

We also tried using the glow plug ports to conduct a compression test and once again the stock compression fittings we can obtain thread into the port but this time they won't seat fully due to the shape of the sealing edge of the glow plug vs. the stock compression test fitting (the bottom sealing edge)

Any information or advice is much appreciated! Boating season is nigh upon us and the engine right now will not even start!

of the glow plug is beveled and fits into the engine block with a mating surface, the bottom of the adapter is flat and does not seal.

 

[twalker H260]

Do you have an old injector or glow plug? If so you could take those with your current adapter to a machine shop and I’m sure they could make you something that would work quite quickly.

It also looks like the top of the injector could be removed, possibly allowing some brass adapters that would allow an appropriate quick disconnect to be fitted? (Preferably an old one that the core could be removed from) The quick disconnect o the adapter does look to be a fairly standard one. Parts to do this could likely be found in the plumbing section of a big box store.


A quick search for m30 compression tester adapter gave this site:

TU-15-34 Lang Diesel Compression Test Adapter, M20-1.50 - MRO Tools

Lang Diesel Compression Test Adapter, M20-1.50. Use with Diesel Compression Tester TU-15. Adapter for Kawasaki Mule 3010 Diesel Kubota; Kubota D902, D950; Universal Marine M15, M20, M25, M25XP, M30.

mrotools.net

(Don’t know anything about the company just a search result. You could search for “th-15-34 lang compression test adapter” and it will give you several other firms. - some I have dealt with in the past.

 

[RoyS]

Try tractor supply sites on line. They might have something.

 

[nsailscal334]

Thank you for the suggestions! We'll look into all of them and keep plugging along (pun intended) until we find a solution!