ZD 30 Options.

[mudnut]

G'day all. I am wondering if it is to possible to hone the bores out on a ZD30 without removing the head, while the engine is out of the vehicle?

It would mean having to remove the timing chain and rotating the cam shaft for TDC on each cylinder being honed. I am wondering if the lip at the top of the bore would be able to be removed in the process.

Also, is it possible to install pistons that will withstand higher temperatures than standard to prevent melting the top of the piston, (eg; ceramic coated, forged etc)?

[threedogs]

Maybe someone could ring Clint up at Readies

[nissannewby]

Not really doable. Piston and rod assemblies wont come out unless dropping the crank. So this would mean the engine or box would still have to come out. Better and easier to remove head

[mudnut]

Yeah, the engine would be out of the vehicle.

[nissannewby]

I would still recommend to remove the head to perform the work you want to do.

[mudnut]

No worries, just thinking of a cheaper way to guarantee a grenade proof ZD.

[mudnut]

Ok. Is there pistons available that won't melt as easily, therefore eliminating the grenade factor? If so would it be possible to get a engine rebuilder to install them on the engine they offer?

[Ben-e-boy]

Ok. Is there pistons available that won't melt as easily, therefore eliminating the grenade factor? If so would it be possible to get a engine rebuilder to install them on the engine they offer?

The pistons melting isn't the root cause. Heat is. Same with any engine.

[SupRob]

Have the head removed to be done, easyer/safer way.

Nad's kit it.

Since replacing my cylinder head and nad's kit on a DI ZD30, it loves 4k rev's, rarely see the EGT high unless it is a very step hill

Has your engine blown?

Rob,

[mudnut]

Nah, just looking at options for roofy, and trying to understand the causes of pulling the pin. roofy's had the NADS installed and a piston still got holed.