Isuzu parts and service

[isuzurob]

I did a 3.1 engine with all genuine parts and it came to 18grand, only resued bits were inlet/exhaust manifolds, and covers, block, crank and conrods, 2.8 was 6.5k my mate got it done 20,000km ago from engine rebuilder in taupo, you get what you pay for with engines

[geeves]

reality is that most people wont pay that for an engine in a 20 year old truck. The rest of the vehicle doesnt justify it. You can get rebuild kits for $1200 but often they have cast iron liners rather than chrome. If the liners have been changed make sure the rings are of the opposite metal as having them the same causes extreme wear

[isuzurob]

the main thing is that everyone changes the liners but the blocks distort and get out of round where the liners go and need boring and oversize liners fitted, if fitting new liners to a flogged block you havnt fixed it, it will just damage the liner again, they are a complex engine, for an old diesel

[nivaman]

I am at a loss to understand why cast iron does not make a good liner (if indeed it doesn't?), I have rebuilt alloy engine with steel liners and cast iron rings and not long after it started smoking (to be fair I didn't follow the break in procedure).
Are chrome liners superior to cast iron?.

[geeves]

Hardly anyone uses chrome bores except high performance engines and Isuzu diesels. The one problem with the steel liners on Isuzus is that they are the cheap option and some have questionably quality. Nissan engines are steel liners and last just as long as our chrome engines.
You can hone a steel bore which does mean that minor bore warping can be taken care of where a wraped block and chrome liners pretty much is going to cause trouble.
Big thing is that the bore and ring must be different material.