well iwas expecting lots of people saying its not a good idea, but i have a s2000 with a damaged engine so if you work out the cost of rebuilding or buying a second hand engine then the cost of a turbo kit then ecu then mapping it works out very expensive, in england i can get a sr20det with gearbox and turbo and aux parts for about £1200, couple of light mods and you have 280 bhp then not much more mods for 350bhp, and you get alot more torque

 

blasphemy!

 

This is because their head does not flow as well as a f20 and cant rev as high in stock form. They have to run a lot more cylinder pressure to make the same hp.

IMO with the parts available now for a s2000 engine you would be a fool to put a SR in there. It is a terrible idea.

 

Sikki Manufacturing makes a kit to fit the engine:

Sikki

J

 

Yeah def old tech on the sr. I do see the f20/22 making power more linear like the ptuning kit. Seems like the a 30r sr would put more power under the curve and more tq. 240s weigh similar to s2000s and with the same power (400whp) the 240 seems to trap higher. But the cost of the conversion vs rebuilding is another issue. Depends on power goals I suppose. Either motor can do 400whp on pump gas.

 

well i have roughly worked out i could do the fulll conversion for the same as a turbo kit on the standard engine then i need to rebuild the standard engine on top of that so i would say in england it is worth it, if i could by an off the shelf conversion kit for a rb25 engine i could do that for about the same

 

The only reason for that is the redline and mathematics.

If you wanted to make equal tq with an s2000 engine all you'd need to do is boost the F20 and cap the redline @ 6400. You'd have equal hp and equal tq. But WHY?? when you can run to 9k rpms and the head will flow SO much more, and thus make a ton more whp,

an F20 may have 400whp & 400whp @ 6k rpms, but that same F20 if revved out to 9k will make a total of 600whp/400wtq.

Equal hp/tq is nothing a fancy numbers game which really doesnt mean shit. It looks great on paper. It is better to take advantage of rpm when available and use gearing to multiply your tq for better overall acceleration.

If TQ was so amazing you'd see F1 race cars with massive tq, but you don't. You have the total opposite. Huge hp/high rpm little tq.

 

if your going with a nissan engine swap, i say RB or bust! IMO

 

a 400whp s2000 would most likely lose to a 400 whp sr despite weighing relatively the same. Based on seeing 300whp s2000 trapping 107-109 vs a 240 trapping 113-115. Dynojet numbers.

 

FAIL SWAP!!! Biggest waste of time and money ever. You have to build a sr20 to make worse numbers than a F20c does bone stock! Not to mention the cost of the swap.
Ive seen the green sr20 JE built car in person. Owner was a loud mouth that towed it to a local gathering taling smak then bitched up to race my old turbo hatch.
Car and swap is different, best thing I can say about it.
IMO shits poop
2jz, rb if you feel the need to swap, I feel getting rid of the nearly perfect motor is blasphamy. But at least you'd go 6 cly no other 4 cylinder can touch it. (4g63 guys mite beg to differ lol)