Power To Weight Rules And Engine Conversions?

[Peter89]

So, i nearly have enough money saved up to purchase my first car however, finding a decent car is harder then i planned considering i don't have that much to spend.

anyways, while i love rb25s, i don't wish to purchase a R33 because of it's size and weight. on the other hand, i'd rather an engine with some low down torque thus ruling out the rb20 in the R32s.

so, would i legally be able to drive a r32 with a rb25 conversion?

please note, i only have to follow the 125kw/tonne rule, got my license before the turbo bans (luckily).

if not, i'd probably go back to looking at s14s.

[Sheriff Wan]

My bet would be no.

The R32's just scrape in under that power to weight rule.

An RB25 would in theory put you over...

Also if you can't afford the conversion - have a search they are more expensive than you think.

I would stick to a stock example.

[Charles89]

Why not drive a RB20 until you are off your P's, then either drop a RB25 in there or upgrade to R34 or something?

[KURAUN]

yeh you should by my car

[_Ryan_]

once engineered it goes off of the new motors flywheel figure and a weighbridge figure IIRC.

My turbo is laggier than stock, so a stock RB20 would be nicer to drive than mine

[KURAUN]

  RB_Ryan said:

once engineered it goes off of the new motors flywheel figure and a weighbridge figure IIRC.

My turbo is laggier than stock, so a stock RB20 would be nicer to drive than mine

i was in the same boat until i chucked in my cam gears

a hell of a lot less of lag and much better to drive

way more steetable

you should invest in a pair

[Curmi]

there is not much difference from a stock rb20 and rb25....

stick with the rb20. like i did. i always wanted a rb25 in my r32 but never happened the rb20 is soo good unless you want over 250kw in your case you don't so r32 rb20 ftw. trust me you'll love it....

[R31Nismoid]

It'll be over power to weight easily.

Motor weight differences are negligeble at best.

[_Ryan_]

  GTS-T_Sedan said:

i was in the same boat until i chucked in my cam gears

a hell of a lot less of lag and much better to drive

way more steetable

you should invest in a pair

I have some... I am just used to motors that arent poo

[boostn0199]

just stick with the r32 and do the the basic mods ppl are doing these days if you want abit of power injectors ecu turbo etc and it will be good enough for street on Ps

[Charles89]

  skline01999 said:

just stick with the r32 and do the the basic mods ppl are doing these days if you want abit of power injectors ecu turbo etc and it will be good enough for street on Ps

Nope....... Can't do any of that, apart from sticking to a R32 lol.

P platers cannot mod their cars to put out more power. They can rice it but can't do anything performance wise.

[_Ryan_]

  Charles89 said:

Nope....... Can't do any of that, apart from sticking to a R32 lol.

P platers cannot mod their cars to put out more power. They can rice it but can't do anything performance wise.

Peter is old rules as I was.

I drove a lightly modded stagea for 2years of my P's without issue. also had a modded 1600, few r31's etc.

An R32 with RB20 or an S14 is best option for peter IMO, as if you need to make an insurance claim, best to keep it simple!

[Charles89]

Even with old rules, you still can't mod your engine to put out more power?

[Rekin]

  Charles89 said:

Even with old rules, you still can't mod your engine to put out more power?

on old rules there is nothing wrong with upgraded exhaust and intercooler. Thats about all you can really do.

Larget turbos, boost controllers, ecu tunes, larger injectors etc are all illegal regardless of P-Plates or not.

[Charles89]

Well yea, you are allow exhaust and one intake mod (FMIC).

I said what I said, coz Skline01999 said ecu, turbo, injectors etc

[Peter89]

old rules, everything goes that's legal(not that much really is considering EPA) as long as the car doesn't go over 125kw/tonne.

rb20s lack the torque, 25s have far more stock (267nm vs 330nm to memory). i planning to keep the car for a good few years when i buy it, so rather not muck around with a conversion after 6months. thought it would be easier just starting with a 25 in a r32.

probably keep looking for s14s.

[_Ryan_]

  Peter89 said:

old rules, everything goes that's legal(not that much really is considering EPA) as long as the car doesn't go over 125kw/tonne.

rb20s lack the torque, 25s have far more stock (267nm vs 330nm to memory). i planning to keep the car for a good few years when i buy it, so rather not muck around with a conversion after 6months. thought it would be easier just starting with a 25 in a r32.

probably keep looking for s14s.

R32 then engine conversion when off p's... its not just the peak torque of the 25, but the power delivery in general...