Building a L30e any traps

[bigVee]

Currently Im looking at rebuilding a L28 out of a 280c (yes I know its the wrong character) which looks like it may need an over bore.

 

Its a N42 head on a F54 block which Im hoping should be an ok starting point.

 

While using the ozdat engine design utility to check potential compression ratios, I stared playing around with the following idea.

 

If I test the block thickness and its ok for a 3mm over bore, I thought I might run a KA24e piston on a l24 rod, giving a L30.

 

Upgrades to go with it would be a dedag of the ports, a L24 cam, probably some springs, and a KA24e oil pump, which I have.

 

My concern with this is other than the thickness of the block, I dont know if I will run into any other limitations which I need to measure/allow for.

 

Any help will be appreciated.

 

[Sirpent]

Best man to speak to and do the job if you are looking for a builder "V" would be Peter Mc

 

I'd say the Ozdat utility is only good as a very rough guide, the realities may be somewhat different.

 

Good luck

 

Cheers

 

John

[luvemfast]

Also.

What are your requirements and goals?

Build to your budget.

[bigVee]

The overall goal is torque, given it will be lugging around a 240c coupe (1350kg) and not to much compression, because I have a 280zxt exhaust manifold for it as well and was hoping to add about 7psi in future.

 

Im happy enough to build the engine myself but was just looking for some extra tips on problems that may crop up.

[dat2kman]

Think long and hard, to go your initial way, ie atmo, you can get a L28 to go quite well, a set of longer 133 mm rods from a L24, a set of basic cast flatop pistons, with pin height to suit rods and block, a bit off the top of the pistons to match it up.

A good balance job on the balancer( get a good aftermarket one) crank, take a little meat off back of flywheel, and clutch, all balanced together.

Match weight pistons and rods to lowest common weight.

A set of triple sidedrafts, extractors, and the  big C Coupe will be fun, throw on a set of whitewalls, keep the oh so unique 260C wheel trims, a nice combo.

 

But wait,,

 

Your second thought is use the L28 turbo stock exhaust manifold, a low blow turbo, a not so big front mount intercooler, grab a stock L28 injection manifold, fit VL commodore turbo injectors ( nissan rb30 turbo injectors are more expensive!) an afyermarket ecu to drive it all,, and,, thetes ypur torque and power, best of all ypu wont need to pull engine apart, as it has a  low comp head and dished pistons, same, pretty much, as a USA 280zx turbo, just keep boost  nice and low,,, after all the C is a Cruiser!