More bhp to my n/a

[jonnygt]

Wanting as much power as i can for my n/a ive got the 75bhp im guessing atm as its a S-reg so itll be gen2 engine??

What mods are needed to reach around 100bhp mark?

Inlet? Induction? Manifolds?

Help please....

[Flynn]

I'd guess you'd be lucky to still be making 75bhp after 15 years motoring but......

Aftermarket panel filter/induction kit

Corolla inlet manifold

4-2-1 manifold or 4 to 1 (exhaust mani)

Decat exhaust?

Injectors from a corolla iirc

This has been covered over and over and these are the bits I can remember off the top of my head....but I'm pretty sure most people will tell you it's an expensive mission trying to break a 100bhp with an n/a starlet and your better addressing weight and handling!

I'm sure you'll get a better answer from someone else though

[Amjad]

Ryan is the man to ask! He'll be pursuing tuning his NA too

[mikey4410]

i would throttle bodie it for sure.somebodys recently done it at very low cost

[PaulStarletSR]

dont forget me, i know what in doin with these aswell lol

ul need corolla inlet, 4 to 1 corolla manifold or an obx 1 (could go custom if u want), corolla injectors, also itd be worth doin your research into chopin up the loom from a corolla to try mate its ECU to your starlet loom.

Lightweight pulleys, lightweight flywheel, do away with the powersteerin to free up some power, cold air induction kit situated right at the front of the engine bay,megasquirt piggy back ecu, u could also whack in a corolla 6speed gearbox (wont do nuthin for power but theyr awesome), and last but not least,full stainless decatted exhaust, 5efhe cams and a thinner head gasket for higher compression!!

if i remember anythin else, il add!

best of luck

Edited August 7, 2013 by PaulStarletSR

[Ryan5793]

i managed 93.5bhp with a exhaust mani, custom exhaust, panel filter and cj leads, pulled quiet well and now have a jdm inlet mani which made mine even better tho not been on the rollers again since.

[rmsnoel]

Corolla inlet manifold, 4afe throttlebody, four branch exhaust manifold in that order. Keep everything else standard and buy a cheap safc off ebay to up the fueling.

When u get the throttlebody make sure and take the spacer too.

Your standard injectors have a better spray pattern. If u want u can use the fte pressure regulator which ends in 040 as all the jap cars use it where as our uk cars use 070. I havnt tested the pressures yet though.

[Fozzie]

People keep saying about Corolla injectors but I don't see how they'd help power? Even with the extra capacity, surely they wouldn't help until you'd maxed out the original ones, which you'd probably never manage anyway with n/a tuning? :/

[rmsnoel]

People keep saying about Corolla injectors but I don't see how they'd help power? Even with the extra capacity, surely they wouldn't help until you'd maxed out the original ones, which you'd probably never manage anyway with n/a tuning? :/

No one knows the capacity of them either. Theres lots of different values quoted for them online 155 175 195 205cc, no one knows.

The 4afe throttlebody (with spacer) from a 1.6 corolla or celica is 50mm and a direct fit for the starlt. Fair enough youll need the rubber intake pipe too.

[jonnygt]

Ill have to keep an eye out for all these parts havnt a clue where to start! Will have to look in the scrapyards i guess....thanks for the answers lads!

Cheers

[AdamB]

The best thing you can do is to weld up the intake ports in the head. They are far too large for an N/A an loose you gas velocity, this isn't a problem with a turbo motor as the air is being force fed into the cylinder, relying upon vacuum alone from the piston moving down to BDC you need as much velocity as possible.

The ports even on the turbo motor are too large and people have made 300+bhp on a stock cylinder head, so they are way too large for an N/A.

You'll probably gain quite easily 5% increase in power.

Edited August 7, 2013 by AdamB

[daniel_g]

Im gonna go down this route with my JDM Carat when i can be bothered

Already has the Glanza S inlet and the coilpack with it being the Gen 3 4EFE. Exhaust mani is the same as a UK i think though.

[jonnygt]

I havnt a clue which one mine is tbh im clueless and getting confused haha

[rmsnoel]

You can buy the e10 corolla exhaust manifold from ebay.de for £20 and the downpipe for £30 then have it welded to your exhaust for £5 and thats how u get a gen1 4_2_1 maniold. Or buy the obx one from america. Makes abit of a different but more importantly it gives the exhaust a really cool note

[RobSR]

You don't need to chop up the loom for a corolla Ecu to fit. They plug straight in, it just won't run unless you swap the immobiliser chip from your ep Ecu. I did the whole corrola stuff when I had the n/a , I'm 99% sure the rolla injectors are the yellow tops and 225cc. Ecu has a higher rev limit too,

[ryan lang]

This is a list of all the things I'd done/planned to do to my old n/a before I was laid off and went back to school. The most important thing to gain power is the mapping/ecu section to take advantage of all the modifications, without it you'll be lucky to see 100 because the standard ecu just can't cope

N/A Performance List

Engine:

5EFHE cams (not 5EFE)

Lightened pulley sets

Head skim for compression

Ported head

Valve springs (there are some uprated valves springs for 4EFTE that can be used in the 4EFE. Eg: speedvision, cruise)

Exhaust:

4-2-1 corolla bugeye exhaust manifold

OBX racing 5e manifold

Hotshots 4e manifold (rocking horse shit, hens teeth etc)

Custom mani back exhaust (or cat-back)

Heatwrap

Fuelling:

Corolla bug eye injectors (beige/brown in color)

Fuel Pressure Regulator (to help with map)

After market Uprated Ignition leads

Spark plugs NGK heat range 6 or 7)

Could go coilpacks if going nuts but probably not needed)

Inlet:

Corolla bug eye inlet (tubular manifold)

4efte inlet manifold

4efte Throttle Body

Cooling:

Civic alloy dual/triple core radiator (personal preference on core)

Air filter (apexi is tried and tested, but whatever you can afford)

Low temp thermostat

Drive train:

Lightened flywheels (various after market ones available)

If you go for an off the shelf flywheel, you may need to buy the equivalent FTE clutch kit because the n/a lightened flywheels are really hard to come by

Corolla G6r 6 speed gearbox (requires shifter unit and cable mount brackets, possibly the actual selector cables) i may be wrong but its do-able

Lightened and balanced crank (if your going all out why not. should get the clutch and flywheel balanced at the same time as the crank)

LSD (they are available for the n/a 5 speed but rare. same as the 6speed. best off buying a glanza box and lsd if you dont go 6speed

Management:

Best way to go is aftermarket ecu, Emanage, Motec, Megasquirt etc (key modification to get the best out of these mods, if your going this crazy)

THEN to control all the gained power (probably only around 30bhp if your lucky)

Brakes:

Levin Twinpot callipers and corolla d4d discs (unsure if they are the correct discs, but there are enough people on here runnign sets to find out)

Celica st205 Twinpots (think they are the same as the levin twinpots)

Celica st185 big pot calliper (unsure on discs but will refer back to this when i do)

GT/Glanza carriers and disc's

Then there are the bigger aftermarket kits like wms, k-sport willwood etc. (bit overkill but if you like flashy then go for it)

Suspension/Chassis:

Whiteline adjustable rear anti-roll bar

Front and rear strut braces

Coilovers (dont go lowering springs if your buying for performance)

I found the c-pillar bar helped aswell

Anti lift kit

Uprated front anti-roll bar

Polybush engine mounts

Any other various strengthening bars

Tyres!

The biggest difference maker is weight saving for straightline power. so what ever you dont need, get gone (rear seats, right through to smaller batteries and taking a dump before travelling etc)

Handling is also the best sector to be modifying these cars in for track use, if you dont want to be shedding out a shed load of dollar

AND MOST OF ALL: keep it serviced and looked after!

[rmsnoel]

Another thread gone to shit. How comes the dutch n germans see 100hp easily without all this mad dog balls throw money at it stuff

[ryan lang]

Only know of 2, one I can't remember his name and one is motion, oh who's done a lot of the above. I'm not saying you need everything above to make 100bhp, it's just a lot of what can be done.

But most of the above is just bolt on. Swap for swap no spacers and fittings needed making up etc.

[turbo Grant]

You can bolt on all the parts but with out it being tunned you will never have any massive or benificial gains.

[morgey]

Just drop a 5efe in and be done with it.

Or if really hunting n/a power put a hi revving n/a engine in like a 4age. Prob be done cheaper than hunting around buying all them parts.

My first 16v 4age swap cost me around £700 on the road

[ryan lang]

You can bolt on all the parts but with out it being tunned you will never have any massive or benificial gains.

Obv, but bolts ons are cheaper and more readily available than custom.

Mapping is essential hence why I mention it a few times

[motion]

Yes i am one of these germans and the other one is sharki.

But i must say meanwhile i suspect my dyno result ...maybe i have "only" 100 bhp because i have the same mods like a few na owners from the uk wich have reached about 100 bhp

Maybe i was on a dyno that makes people happy ;-)

I dont care ....it pulls well and nothing more counts

Sorry for my bad English ....but i think since i am on this board it got better :-)

[ryan lang]

Yes i am one of these germans and the other one is sharki.

But i must say meanwhile i suspect my dyno result ...maybe i have "only" 100 bhp because i have the same mods like a few na owners from the uk wich have reached about 100 bhp

Maybe i was on a dyno that makes people happy ;-)

I dont care ....it pulls well and nothing more counts

Sorry for my bad English ....but i think since i am on this board it got better :-)

Can you write a list of your mods and a pic of your graph to this thread please mate?

Would be much appreciated

[motion]

here it is

-green twister intake/filter

-bigger throttle body (50mm diameter)

-corolla tubular intake manifold ported to fit the bigger throttle Body

-glanza s injectors incl. glanza s fuelrail

-slightly ported head

-skimmed to a compression ratio of 10.6/1

-5e-fe camshaft

-burdinski 4-2-1 exhaust manifold

-200 cell steel cat

-50mm exhaust system without presilencer

-greddy e-manage ultimate

-lightend aluminium crankshaft pulley (300gr.)

-lightend flywheel (3900 gr.)

-corolla 6 speed gearbox

pink = hp at the fly

blue = hp at the wheel

red = torque

Edited August 8, 2013 by motion

[Socks]

here it is

-green twister intake/filter

-bigger throttle body (50mm diameter)

-corolla tubular intake manifold ported to fit the bigger throttle Body

-glanza s injectors incl. glanza s fuelrail

-slightly ported head

-skimmed to a compression ratio of 10.6/1

-5e-fe camshaft

-burdinski 4-2-1 exhaust manifold

-200 cell steel cat

-50mm exhaust system without presilencer

-greddy e-manage ultimate

-lightend aluminium crankshaft pulley (300gr.)

-lightend flywheel (3900 gr.)

-corolla 6 speed gearbox

pink = hp at the fly

blue = hp at the wheel

red = torque

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Motion!