[Mk2] [Turbo] How can i hit 300 bhp?

Posts about anything do to with modifying your car such as fitting aftermarket parts, bodykit, or tuning the engine for more performance.

Moderators: IMOC Moderators, IMOC Committee Members

jaxx

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by jaxx »

Mine had the following to make 272bhp at the hubs (roughly around 300 at the fly at a guess?)

Apexi filter
Blitz NUR exhaust
Gutted cat
GReddy Emanage (mapped and dyno'd by THOR)
Greddy E01 boost control at 1.1bar
IK24 plugs
Standard interccoler (with fan sensor disconnected)

Everything else in tip top condition or uprated, as regards ignition system etc...

EDIT: Sorry just read you want 300 at the wheels! :lol:
pez
Posts: 521
Joined: Sat Sep 17, 2005 9:10 pm
Location: NW London

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by pez »

As i mentioned above, i will modify the car slowley to hit 300 bhp @ wheels.

Now my next mod is going to be intercooler?

What intercooler should i buy or shall i go for chargecooler?

:thumleft:
Harry
Posts: 13941
Joined: Wed Mar 30, 2005 9:03 pm

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Harry »

SPL Phoenix power intercooler kit with their large over sized piping-end tanks and designed core or Radtech chargecooler or Radtech rad with GT 4 st 205 chargecooler? :D
Leon.
Posts: 12780
Joined: Fri Jan 07, 2005 7:35 pm
Location: Guildford, Surrey

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Leon. »

Tbh £1000 won't get you very far at all, maybe to 300-310 @ fly max.

As said above, if you want 300 @ wheels you'll need at least 800cc injectors, 255 l/hr fuel pump, a standalone ECU to control it including bigger MAP sensor etc (Link or Apexi PowerFC are most common), a new turbo, 3" dp and exhaust, ebc, good intercooler or chargecooler. I think 350 @ fly (~290-300 @ wheels) is where most people start to uprate internals too, you could of course take a chance if you can afford to.

Bottom line is there is a big difference between 300 fly and 300 wheels - both power and financially, start with the first figure as you'll need the same basic mods, then if your pockets and desire stretches you can do the rest - turbo, ecu, fuelling and internals. If you are going the whole hog you'd probably not want to limit yourself to 300 @ wheels anyway :wink:
gnzyza
Posts: 1300
Joined: Wed Jun 27, 2007 11:39 am
Location: Gloucester

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by gnzyza »

Leeroy wrote:
If you are going the whole hog you'd probably not want to limit yourself to 300 @ wheels anyway :wink:


I'd agree coz most parts you'll need for 300 at the hubs will be capable of more power anyway, so with a few extra bits here and there you can achieve higher figures.

So its not really worth financially to go for 300 atw unless you aim to go even higher :-k
jimGTS
Posts: 14024
Joined: Tue Dec 14, 2004 1:40 pm
Location: North Kent

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by jimGTS »

xistance wrote:i cant belive my car is 196 at the flywheel somthing has got to be seriously wrong :-k :pale: :? that means my car is about 120hp at the wheels which my old 106 gti was :oops:



how many wheels are driving the power of that 106?? or mr2 turbo? 4 or 6??

you will not be seeing 80fly tranny losses at that level of power...
120 atw on a 106 is like 140-150flywheel...
196fly on a turbo is and should be around 160atw....really depends what sort of tranny losses this dyno gave you. without knowing this, your still at square one.


on the mr2, your looking at 35-50tranny losses from power from 200 to 400flywheel from the good dynos ive seen.
if someone is hitting near on 280atw, then imo that is closer to 320fly than 340flywheel...
very few rev3 are hitting 300fly, 260atw without an ems, the ones that are, are very lucky, and really would struggle to benifit from an ems, cause theres simply not much more to gain power wise....

300atw is a different kettle of fish, and as some of the good advice already given has mentioned, your looking at spending 5-10k on a rebuilt and decent turbo and ems...that money will of course mean you could strap a huge turbo on and remap for lots more power.
or spend 3-5k on a decent turbo, fueling and a great ems and map and hope the engine lasts for a while at that power level.
toyokid
Posts: 251
Joined: Thu Dec 16, 2004 6:46 pm
Location: North Yorkshire
Contact:

Rebuild for happiness?

Post by toyokid »

The cost of a rebuild will be somewhere in the region of £2500 to £3000!
You will be looking at fitting pumps and pulleys.
Gaskets and bearings
Clutches etc

A major financial spend!

Stephen
Martin F
IMOC Moderator
Posts: 14830
Joined: Fri Aug 04, 2006 1:19 pm
Location: The Couch !

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Martin F »

unless you know what your doing its an expensive game.....labour is where so much money goes... :-k
pez
Posts: 521
Joined: Sat Sep 17, 2005 9:10 pm
Location: NW London

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by pez »

Well i am going to take it easy and mod the engine or go mental and get an engine rebuilt.
Al-sw20
Posts: 1623
Joined: Sun Jan 23, 2005 6:01 am
Location: Christchurch, New Zealand
Contact:

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Al-sw20 »

mattcambs wrote:The absolute limit of the stock turbo is about 280bhp at the wheels (~340bhp). This requires a CC, fuel pump and a fully mapped ECU running around 1.3bar and ain't cheap.


1.3 bar to get 280rwhp on a ct20b? I hope you don't pay your tuner actual money.

Went for a run with my friend today in his gen3 motor'd '90 turbo. 291rwhp @ 15psi on 95 octane fuel with his stock ct20b.

It runs a Link Plus ecu, stock ct20b, gen3 engine, Aussie DP, 3" exhaust, ss autochrome i/c, some cheap pod filter.
RyanRs
Posts: 4458
Joined: Sun Sep 25, 2005 12:05 pm
Location: Medway,Kent

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by RyanRs »

sorry if this has already been said, but ..... 300hp is not the limit of the standard engine longblock..

i think around 500fwhp has been on an un-opened engine in the usa... and i know a rev2 using a box standard head / cams / valves / intake / TB managed a 10.88 1/4 mile on c16 gt3076r @ 457whp iirc -pulls nice wheelies too :P
Hellboy

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Hellboy »

Is it really worth spending £3 -5K to get that little power increase?

Ive just got my car back together again and fully sorted.

CT20b
Mongoose Exhaust
Bashed out cat
Blitz ECU
Rev 4 LSD Turbo transmission
all new ignition and modified distributor and new HG.
All fully timed up correct and Ignition timing sorted.

If I run about at 16psi the car is barely drivable as it so fast (3rd gear wheel spin) I dont even have time to look at the revs or the speedo as you run out of road to fast and if you take it any where near 8K your doing way over 100mph so I find my self changing up at around 4500K otherwise I would loose my license every time I take it out , the car is a Torque monster like that.
So I now run it around at 10-11psi , much more usable , I can use the power band fully without having to surgically have my eyes removed from the back of my head and put back in there sockets, it much more of a work out to drive it at it best especially on a track and far more rewarding and enjoyable - guess that just me , also as it effectively stock and Toyota made them to be used like that day in day out I'm not worrying about it going bang anymore.

I think if i was building a full on drag racer then I would go all out , but for my daily driver IMPO I feel the MR2 is more than fast enough at 250 -280 FWHP and BHP per £ to get them there is cheap and more than adequate!
RyanRs
Posts: 4458
Joined: Sun Sep 25, 2005 12:05 pm
Location: Medway,Kent

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by RyanRs »

Hellboy wrote:
If I run about at 16psi the car is barely drivable as it so fast (3rd gear wheel spin) I dont even have time to look at the revs or the speedo as you run out of road to fast and if you take it any where near 8K your doing way over 100mph so I find my self changing up at around 4500K otherwise I would loose my license every time I take it out , the car is a Torque monster like that.


Hmm i am starting to get scared now of what mine is going to be like when its pushing past 600rwhp and 500 lbft torque(hopefully :P) :shock: 8-[ i have to admit tho, with the 300 RWHP that i had before i took it off the road, it was mind blowingly quick and quite 'touchy' !!
Hellboy

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by Hellboy »

with 600HP - un drivable on boost IMO , good for a drag car but cant see the point on a road car, the chassis cant cope with it , not knocking you btw.
2Crooky
Posts: 3306
Joined: Tue May 09, 2006 11:34 pm
Location: Guildford

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by 2Crooky »

Agreed^^^^^^

Our quality of roads is truely xxxx!!!!!!!

With track coilovers, i struggle to put down 230bhp on a bumpy road!! Unless you plan on living next to an autobahn then i can't see how 600bhp can be used everyday :shock: Will be fun too see though :twisted:

No offense to the maker of this thread but am i the only one getting slightly annoyed of this topic now???? This exact tuitle has to be on here at least every 2-3 weeks!! With all the same answers.

IMHO there is no point in chasing power figures, just keep modding the engine slowly and get her mapped when you feel she is quick enough for your driving style and road conditions. The difference between 280-300bhp is very marginal anyway.

You will either be spending moderate amounts of cash for a nice and strong 280fwhp, or silly amounts for the more serious and going for 400bhp+

At 300bhp+ on the stock turbo you will be pushing it at high levels of boost, but on a bigger turbo you will experience more lag and loer boost than desired to keep the stock lump from going pop.

Just my 2p
GeoffC320
Posts: 2776
Joined: Sat Feb 19, 2005 3:32 pm
Location: Caterham

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by GeoffC320 »

Have to agree with a lot of the comments above. My old Rev3 was running a touch under 270rwhp and that was plenty quick enough. From memory the actual tuning to get to that level cost about £1,500, although I did have an uprated clutch (old one was at the end of it's life) and an alloy flywheel done at the same time (WELL worth it).

I wouldn't say it was in any way 'nearly undriveable' although you did have to watch yourself in the wet when the rears got down to around 4mm (ooh...say every 6,000 miles or so :-k). Really cannot see anyone actually *needing* more power than this, the speeds you could hit with such ease in built-up areas was really a bit OTT and a lot of restraint was needed.

I think that sort of power level is where the MR2 makes most sense TBH. At that range you really get the best bang-per-buck...after that it's the law of diminishing returns.
a16vwn1
Posts: 310
Joined: Mon Jun 27, 2005 11:35 pm
Location: oldbury,west mids
Contact:

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by a16vwn1 »

turbo-g from the forum just made 312bhp and 308ft/lbs at 0.95bar on stock gen 3 ecu and fueling and a gt2860rs
mattcambs
Posts: 2308
Joined: Thu Jul 13, 2006 9:59 pm
Location: Saffron Walden, Essex

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by mattcambs »

a16vwn1 wrote:turbo-g from the forum just made 312bhp and 308ft/lbs at 0.95bar on stock gen 3 ecu and fueling and a gt2860rs


That's impressive. I bet the spool-up is nice and fast too.
JAP BOY
Posts: 812
Joined: Fri Dec 17, 2004 5:53 pm
Location: Midlands
Contact:

Re: [Mk2] [Turbo] How can i hit 300 bhp?

Post by JAP BOY »

The most tranny losses i've seen on my car have been 34hp with uprated clutch!!!!
Also there was a MR2 Rev3 earlier in 2007 tuned by THOR running over 400hp with stock internals!!!!!!

what the guys should say mate is that you take a massive gamble if you go over 350 FWHP on stock internals!!!!!
Also i'm sure people run abit more than 300FWhp on a CT20 thought i've seen figures of around 330FWHP!!!!

Talk to Rogue or other tuners information on imoc is not always too clear!!! :thumleft:

Also no offence to the Topic starter but this type of stuff should be covered in the knowledge base!!!!!!!!
Post Reply

Return to “Modifications”