Engine swap

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
z.Leinbach
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Well due to unfortunate events, I'm stupid low compression in 2 cylinders on the same bank, soon by the time I can afford to get around to it it will be time for a swap, I am considering a new block an fresh heads, decent support mods, (light weight flywheel, under drive pulleys, you all know) aiming for 200on the ground, anyway, was considering a jdm engine and a rebuild kit with a DETT oil pump, or would it be more cost effective to get a US engine and rebuild it, also is it possible to remove the engine WITHOUT evacing the R_12 as my AC still works and I can't afford he conversation, ideas? Addition, opinions all welcome (except for park it)


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evildky
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If you want power the TT swap is more power for less money, just more work. I'd start checking salvage yards and classifieds for a wrecked TT.

z.Leinbach
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as of right now the bank owns the car, wonderful financing, i dont want to twin it just yet, just get a good strong base for it ya know, also still cant really decide if i want to boost it yet, ya know?

z.Leinbach
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Ok so if I want to swap a stock(rebuilt with forged) what all would I need parts wise, as far as clutch for daily use, inter cooler I'd like one I can hide behind the stock bumper, injectors for support, fuel pump? Dk which one to get, best piston size for a used engine? Quite frankly I'd like to know a parts list to aim for. This car is and will be a daily

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evildky
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Having low compression in 2 adjacent cylinders is most likely just a HG, a HG is pretty cheap if you can do the work yourself, probably around $1000 in labor if you have it done.

If you rebuilt the stock motor figure the basic rebuild will cost around $1000 if you do the pulling and assembling yourself, forged pistons will add another $800 to that price, and if you hire the labor out add another $2000.

If you can find a good used engine at a salvage yard it's probably around $800, again do it yourself on the cheap or add another $1000 for labor.

z.Leinbach
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well im set on a twin turbo swap, aiming for 400hp, something manage able as a daily, only concern is the intercooler set up, and getting away with not having to evac out the R-12 refridgerant, anyways to get around it? esspecially going to a twin turbo engine? also recircs or, blow offs? i see alot of nays on the blow offs? i also would like to keep the stock NA front bumper, ya know the whole sleeper look, and not have to cut up the straight front end, also would a staged non turbo clutch be enough for a slighty moded twin turbo.

prices and sites would be awesome, also this is my first swap/rebuild if needed (probably should anyway), but input, tips and tricks would be appriciated.

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evildky
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Most people don't know the difference between a n/a bumper cover and a TT, as a matter of fact most aftermarket suppliers only sell the tt version. stock TT intercoolers or upgraded side mounts in the stock location is the most stealth.

Cost fo doing a TT swap, well now you'll want a front cut to get the oil cooler, intercoolers, radiator, piping etc, also the front cut will come with an odometer so milage is known and all the parts are more likely to be there and damage free, down side is you're looking at about $3500 last I checked from a front cut and if you're paying to have the swap done figure around $3k. Or you can go buy a high mile clean 350Z for $that saem 6500, you'll make about as much power as a stock TT and have a newer nicer car that is less difficult to service, and has fewer age related issues and actually has some parts interchange and plenty of current aftermarket support, about $4k gets you a bolt on turbo kit to make about 400 whp.

nissanfreak12
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Car: 92 300zx 2+2 TT
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z.Leinbach wrote:well im set on a twin turbo swap, aiming for 400hp, something manage able as a daily, only concern is the intercooler set up, and getting away with not having to evac out the R-12 refridgerant, anyways to get around it? esspecially going to a twin turbo engine? also recircs or, blow offs? i see alot of nays on the blow offs? i also would like to keep the stock NA front bumper, ya know the whole sleeper look, and not have to cut up the straight front end, also would a staged non turbo clutch be enough for a slighty moded twin turbo.

prices and sites would be awesome, also this is my first swap/rebuild if needed (probably should anyway), but input, tips and tricks would be appriciated.

In bold and in color;

In order to get the stock piping from a TT where it needs to, you cannot use the NA condenser. It is too wide. It can be done with some radical piping that is custom made and even then it might be not possible. So you will have to evacuate the R-12.

z.Leinbach
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Well crap. The r12 machine at my work is dead.. this is gonna suuuuuck lol, as for the intercooler, can how can I fit one behind the factory bumper??? Also would a stage clutch be enough for a 400HP car?? Also back to the whole, I don't want to chop to much on the car.

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evildky
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87 Nissan 300ZX N/A-T
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If you buy the front cut it comes with intercoolers, piping, condenser, radiator, oil cooler and everything else you need for the swap, maybe just start stock then worry about adding power, sounds like you're already in over your head.

z.Leinbach
Posts: 504
Joined: Thu Aug 06, 2015 10:08 pm
Car: 1990 Nissan 300ZX NA T-top
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Well considering I bought this car and after I fix one problem another arises, ya I'd say I'm alil over my head but it's nothing I can't handle, I just want to know what parts to aim for and what ticks I can muster up for when I drop some cash for what I'm planning on doing, there is no getting rid of this car or selling it, i payed wayy to much for it, but thats fine with me. I know this seems dumb an far fetched but I want a somewhat quick swap, as I'm aiming to get a whole harness for the engine, and will be doing a very thorough reseal/rebuild if needed, also aiming to keep it sleek an untouched looking


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