Thread: bottom end rebuild?

hello there
well first things first...as everyone else will say "these engines are ment to be rebuilt" honing is probably not on the cards because these motors have liners which are chromoly and are probably best left how they are unless like yours and has a large mark in it but usually even deep marks can be forgotten and will bed in not as good as a perfect bore but still aint the end of the world just as long as the ring isnt still scraping up and down the bore

rebuild kits are around $1100 mark and that includes almost everything you will need. also boost and pyro guages since it is turboed would be much helpful to preventing any big problems.

there will be nothing else wrong with the block they are that strong it isnt funny!
is yours factory turbo? if so i would be interested in buying the bare motor if you decide to sell it as i am going to be looking soon...
what size turbo are you running?

New liner, sort the rings out. Done in a weekend.

Liners can be pulled and seated in-situ. I've done it myself.

Thanks Dougal and CHIEF,

I get the theory, and done in a weekend sounds great - thou you are probably far more mechanically competent than me, and working in an unpowered paddock isn't the easiest (especially cranky with it, two tick bites in two days). However with a pending house move and possibility of help and tools, my outlook should improve.

I have a boost gauge ready to install when my engines more together, and just googled what a pyro gauge is/does.

sorry - its a plain 4BD1 with an after market 'TB 3102 Nissan turbo'

Originally Posted by c.h.i.e.f

hello there
well first things first...as everyone else will say "these engines are ment to be rebuilt" honing is probably not on the cards because these motors have liners which are chromoly and are probably best left how they are unless like yours and has a large mark in it but usually even deep marks can be forgotten and will bed in not as good as a perfect bore but still aint the end of the world just as long as the ring isnt still scraping up and down the bore

rebuild kits are around $1100 mark and that includes almost everything you will need. also boost and pyro guages since it is turboed would be much helpful to preventing any big problems.

there will be nothing else wrong with the block they are that strong it isnt funny!
is yours factory turbo? if so i would be interested in buying the bare motor if you decide to sell it as i am going to be looking soon...
what size turbo are you running?

Not quite correct.

The liners are not chromoly, they are hard chrome plated. Hard chrome is nothing like decorative chrome, and in the case of the chrome plating on Isuzu liners it has a degree of porosity to hold oil for lubrication. The advantage is that it is very hard -harder than chromoly and probably the best surface for cylinder bores that can be found, but expensive.

thanks for the correction john i was meant to say chrome lined but after months of working on this stupid v8 holden ls1 i have started calling things different names (such as the top piston ring on the ls1 being chromoly)....

i would be quite interested to see what my cylinder liners look like after 400k im asuming still pretty good...

i didnt think that the liners would hold oil thats very interesting .

in your opinion john do you recon getting the piston tops ceramic coated and rods balanced in the presuit for more HP ?

Originally Posted by c.h.i.e.f

thanks for the correction john i was meant to say chrome lined but after months of working on this stupid v8 holden ls1 i have started calling things different names (such as the top piston ring on the ls1 being chromoly)....

i would be quite interested to see what my cylinder liners look like after 400k im asuming still pretty good...

i didnt think that the liners would hold oil thats very interesting .

in your opinion john do you recon getting the piston tops ceramic coated and rods balanced in the presuit for more HP ?

Stop hijacking every ****ing Isuzu related thread, go start one already

If your interested in a complete running engine, send me a pm

isuzu section is about the only section i look at now because it goes into depth on topics with people such as yourself that actually know there stuff hence me posting alot on here!