S15 sr20 VS S13 sr20

[favthing2do]

what i want to know is there a concrete advantage of having a S15 engine if i am just goin to mod the hell out of the engine.i see that everyone says the s15 stock just kicks the h*** out of the s13 and s14 stock but that is mainly due to the ball bearingt28 that it comes with. am i right or wrong? i just want to see if i spend an extra i dont know $2000 dollars for the engine am i gointo see some serious difference or should i just spend it in mods?

[Tweaky_Tom]

Variable Valve timing is the MAJOR diff. that makes the engine more powerful. That's a reliable engine if you don't want insane amounts of power.

P.S. Do a search for this material. There's LOADS of it. Top right red button.

[favthing2do]

i did but see the problem is the search doesnt search the subject it just searchs the words and going through all the posts with S15 and S13 could take days but thanks for the reply so you think the $2000 is worth it instead of mods?

[Tweaky_Tom]

NOT by any means. Im a big fan of the red top. Very productive engine. The black top is baller style to me. I think if you had extra cash to spend then the black top is pimp. But if you're just looking for bang for your buck. The Red top will do wonders with $2000 of mods. MAD PONIES!

[favthing2do]

no i'm just saying for the extra 2000 fot the S15 blacktop is it worth it when i can stick that extra in the red topi know the s15 is a stouter motor but is it worth 2000 morewhen i can take the 2000 and put it into things i was goin to do anyway?

[matt4pl]

the S14 sr has a ball bearing also, with 220 hp and one cam has variable timing on it, while hte S15 sr has both, but also the S15 uses a 6spd which i think has different bolt patterns or wahtever and wont work with 5 spds, and the 6spd isnt supposed to be as good as he 5spd

[favthing2do]

ya but i am talking other than the turbo cause that is goin to be gone as soon as i get the motor in

[matt4pl]

s13 all the way thenS15 SR = 250 hp at the crank stockS13 SR = 205 hp at the crank stock + 2000 to spent = 250rwhp easily, and you dont have to blow the extra money on the entire rear end of the S15 and go through the trouble of installing all of that, however, if you got cash to spare, knock urself out and go for it, its very rare compared to the other SR's and vvt is always good, so its about your priorities and waht u want really

[favthing2do]

i want to turn it into the quickest 240 possiblei got atleast $10 to $15 grand to put into the car and that doesnt include the car

[Onizuka]

Are you installing yourself?

[thes14project]

I'd deffinatly fo with the s13. vvt I hear is a little harder to tune once you get into the really high horses. If you've got that much money though you might as well get a blacktop s13. It's the exact same as the red, just newer. Besides, you can do a hell of alot of mods on the s13 with $2000. remember, if it's the more popular it is the cheaper and more avaliblethe parts are.

[SpeedRacer1]

They both have pretty much the same potential. A redtop is easier to mess with since if you blow it up you can get a relatively cheap replacement. VVT doesnt help the engine much, its the turbo. 6 speed is rumored to be weaker, but its exactly that, a rumor. Aftermarket support is slightly higher in the US for the S13 and S14, but if you are serious then any SR will have the same potential.

[ItzGenX]

The S15 does NOT have vvt on both set of cams. It is only on the intake side. If it had vvt on the exhaust side, there wouldn't be any 272 degree profiles sold for the S15 motor. The S15 is basically a S14 motor coupled with a better turbo, better injectors, better factory tuned ecu, 6spd transmission, and helical limited slip diff. All in all, it is still an S14 motor with some fancy mods on it. The head and bottom end on both motors are almost identical with very minor things different. The S13 bottom end is also identical, so the s15 being more 'stout' is out of the question. If you feel that is what you would like, go for it.

[favthing2do]

thanx guys that makes up my mind. i am not putting in my self a friend of mine has a garage and a lift so i help him put it in