Hi guys, I have just joined 240z.org today, and I must agree that a rb engine swap is a pretty good idea, they go in reasonably easy. I would have loved to do a rb26dett conversion on my z but those engines are expensive, I went with the rb25det (conversion still in progress) still costs a fair bit but still less then rb26dett

I agree with Cuong, the RB series of engines (even the RB30) are a good choice if your just after straight out bang for your buck. the EFi on these is smooth and efficient, the sensors are all easy to reach and swap out and with an after market ECU the sky's teh limit.

If however you need to work with in the constraints of a racing class, then the L28 is definately the go. The nissan parts bin is almost bottomless when it comes to what can be done with them. Flexibility is an understatement :classic:

R.

Couldn't agree more Cuong, I'd love to have your engine in my enginebay, care for a swap? But really the L28 has to be stroked and bored out to 3100cc. Head shaved incredibly to raise standard compression from 8.65:1 to around 12:1, Triple Side Draft 44 or 48mm Webbers big cam some cases diesel crank out of L28 Diesel Patrol and all the rest of the gear. Last price check it was around $10K to drive in Standard and drive out with 360-380BHP. Thats alot of money a tough decission.

RB26DETT would be the coolest engine if you could afford it, I have seen endless magazines with a GTR pushing out 1000's of hp, the most I have seen is 1350hp from one of those engines. Probably completely unreliable at that level though.

A GTR down the road has a reliable 850hp.

I have gone with a lesser version the RB25DET, I would stay away from the v8's and v6's as they would add more weight and that would change the car's handling.

smg1404:

- do you have a link to that engine?

another magazine had a 240z with a RB26DETT that was pulling 8.1 second 1/4 miles

Of course... I couldn't agree more. I would think the Rb engines are the most bang for the buck. by a lot. There is little chance for the original L series to compete... The engineering for the L series is several years behind that of the Rb series. One issue has to be do you really need that much power. In some cases you can have too much power for the situation... ( i can't believe I am saying this). But I have seen cars that were so powerfull that the driver could not controll them effectively... I you smoke the tires instead of acellerating, or spin out into the weeds, it's hard to win.

I knew I shouldn't have said this.... Oh well.

Is a engine swap from a 300ZX to a 240ZX a bad idea? It sounds good to me. How much do these engines cost? And i have heard they are not that hard to get power out of them.

So, if you use an L28 with flat top pistons, modified head (N42 or E88, ported intake & polished exhaust), Carbed, with a mild cam for street drivability, headers & exhaust. What kind of horse power can you expect?

Well, hmm. Rebello claims 200-225 area with their IT legal L-28's. That is with only a 40 overbore, stock pistons, stock cam, balancing, blue-printing, and very minor porting and nearly stock FI.

How much? 225-250 if it is done right, would be a bit dependant on which cam, carbs, and other bits you use. Would be nice to see just what it would do on a dyno.

My choice would be with an E-31 with the later 280 valves for even more compression.

Apparently the 1JZ-GTE twin turbo out of the previous shape Toyota Supra is also a very good option, though not a nissan engine, an RB is still no more original if that's a concern.

In standard form the 1JZ Twin Turbos have quicker response than an RB25 DET, are slightly more compact in size and are cheaper to buy.

Irish member, posted here before, currently stuck on a drieshaft problem with my project car outside, and I've decided I definitely want a tuned 240Z next having downloaded a video of an awesome Chevy V8 engined beast from Kazaa.

When we're talking about engines here, any chance of clarifying codes for an experienced petrolhead who knows nothing about Z's. What is the ultimate Z engine that will mate with the original gearbox without the need for installing a new box/axle combination? What sort of power can you expect?

Another thing, is there any RHD Z's left? I have a friend in Phoenix, Arizona and I'm trying to persuade him to ship me one in a container.. he's not keen being so far in land and he says he's seen a few and they're all rust buckets

Mate, one word: Australia.