compression tester

[chapel gate]

Can anyone recommend a reasonable compression tester for the 80 series?
ta.

 

[clivehorridge]

Can anyone recommend a reasonable compression tester for the 80 series?
ta.

Aren’t they all much the same Mike? None of them are particularly expensive, like this one?

https://www.amazon.de/Draper-37442-...1543261567&sr=8-9&keywords=compression+tester

 

[Beau]

The one above is more for petrol engines. You'll want a diesel made one that can read up 500 PSI. Pretty sure our yota diesel compression are around 400-500PSI? Also make sure to get one with correct fittings. I check compression from the glow plug holes.

 

[Towpack]

498psi or more.
Min 356 psi
Difference between cylinders 71 psi or less.

From the 1HD-FT manual. Should imagine the 12 v model will be the same.

 

[chapel gate]

Aren’t they all much the same Mike? None of them are particularly expensive, like this one?

https://www.amazon.de/Draper-37442-Kompressionsprüfer-Ottomotoren-Adaptern/dp/B0001K9TV0/ref=sr_1_9?ie=UTF8&qid=1543261567&sr=8-9&keywords=compression+tester

Pretty much what beau said clive. I want something haĺf decent and with the right fittings first time.

which one do you have beau?

 

[SteveJB]

Sealey Clarke Laser should be able to get from the web net or local motor factors no experience of the above just suggestions guess not much can go wrong but in most cases you get what you pay for

 

[clivehorridge]

I’m always ready to be corrected and I’m no diesel specialist, but AFAIK the 1HD has a compression ratio of circa 18:1 the one being atmospheric which is 1 BAR.

18 x 1 = 18 BAR so why would you need something as high as 40 BAR?

My 1HZ has a compression ratio of circa 24:1 so that would need something like 30 BAR to be on the safe side.

Not arguing, just interested and askin’....

 

[Firewout]

The one above is more for petrol engines. You'll want a diesel made one that can read up 500 PSI. Pretty sure our yota diesel compression are around 400-500PSI? Also make sure to get one with correct fittings. I check compression from the glow plug holes.

Afaik the hdft doesn't have glowplugs, so a test involves taking out the injectors replace them with an adaptor.

 

[frank rabbets]

Take off the wire on the dizzy pump then crank the engine. You should get 6 even compression noises. Quite commonly you can count through 1-6, and again, as they may all well be slightly different. A quick/low compression one will be very obvious and repeatable ad infinitum. If that is any help. Only trouble is you cannot tell which is the weak one unless you start the engine and crack open each injector in turn. The weak cylinder may well have a different sound than the others when doing this.

 

[Iwan]

Good reply Frank... I'm guessing that it would be a specific service tool with the same shape as the injector to test it with and a new copper seal.

Why do you need to test it?

 

[chapel gate]

I’m always ready to be corrected and I’m no diesel specialist, but AFAIK the 1HD has a compression ratio of circa 18:1 the one being atmospheric which is 1 BAR.

18 x 1 = 18 BAR so why would you need something as high as 40 BAR?

My 1HZ has a compression ratio of circa 24:1 so that would need something like 30 BAR to be on the safe side.

Not arguing, just interested and askin’....

most of the petrol testers I have seen are no where near 500 psi, I would also like one that has the right connectors for the 1hd-t glow plugs and the 1hd-ft injector housing.
what does BAR mean clive?

Good reply Frank... I'm guessing that it would be a specific service tool with the same shape as the injector to test it with and a new copper seal.

Why do you need to test it?

its not for my motor mate. the engine in my 80 is stronger than god and sweeter than love!

 

[Beau]

This is the one I have. If you zoom in on the pic, the middle bottom attachment piece is what screws into the glow plug hole (if you have glow plugs). This is for the KZ motor but I think glow plugs are pretty similar accross the diesel range?

https://www.harborfreight.com/diesel-compression-tester-set-63726.html

 

[clivehorridge]

most of the petrol testers I have seen are no where near 500 psi, I would also like one that has the right connectors for the 1hd-t glow plugs and the 1hd-ft injector housing.
what does BAR mean clive?


its not for my motor mate. the engine in my 80 is stronger than god and sweeter than love!

There’s 3 BAR’s in my vocabulary, one you walk into to warm a cold one, one you walk into and crack your head and the other is 14 psi... oh there’s a 4th.... chocolate (love it)...

“Stronger than God and sweeter than love”.... anyone would think you’re an 80 fan Mike

 

[chapel gate]

lol! very good clive.

yes, im rather partial to an 80 series...