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Starlet N/A tuning.. whats next?


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alrite folks. after this recent crisis of mine, it has given me a kick up the arse and sorted me out again and im back to normal!

rite,

are there off the shelf cam kits available for the N/A? and if so who makes em and gains ect!

also, is there an off the shelf manifold for it? that doesnt need modding? again cost and gains ect..

are throttle bodies available? same again with the gains ect,

finaly!

i read about a recent 20v conversion think it was mentioned in the JAE review in bonzai... whats the crack with that? jsut lookin for some more power to put a smile on my face as an everyday driver!

cheers in advance for any help given!

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Please try and post in the right section Jay.

Also have a good read in here.

NA Engine Discussions

Most of your answers are covered and some of the modifications you have asked about exist but are mainly custom or havent been used by many members on the site.

Also the 4AGE 20V conversion was in Big_T-SR's EP91, check out his thread for more info.

Please make more effort to find the information before posting, this applies to all.

Thanks

Joz

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  • 2 weeks later...
If you check in the 4EFE tech section I have a couple of threads askin the same sort of question, some good info in there matey.

What mods do you have at the moment?

Induction kit with big cold air feed

Spax 40mm sport Lowering spring kit

Corolla inlet manifold

Cobra free flowing over bored Cat back S/S exhaust, 4" jap style box

Stripped out

Engine breather

NGK platinum spark plugs

front strut brace

yoko prada spec 2's

short shift kit

thats it realy performance wise! anything else???

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You could go for an exhaust manifold, the OBX ones are available on ebay (for the 5EFE but fit the 4EFE). They're from the USA though so shipping may be expensive.

Lightweight pulleys/flywheel are another option.

Some sort of piggyback management?

Oh and raising the rev limit could be a good idea, there's a guide on it somewhere but I always forget where it is lol someone will have it. With 4EFTE valve springs you can rev to 7500rpm.

Let me know how you get on because I plan to do most of this stuff next year, would be nice to know what sort of figures you get with those mods.

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ive had a browse on the internet, and cant seem to find throttle bodies for the starlet... just wanted to see if any of you guys had seen them done before?

Make them from Bike ITBs, hardest part will be getting the TPS to work.

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so bike throtle bodies, where would i start. what size cc? what bike?! what type of throttle bodie.. i have absolutly no idea what wud fit!!! if sumone has any clue i would seriously consider trying it!! watched some videos and just think it wud be a worth while mod.

also, can you just put the 5afe block and top onto the base of the 4efe, with the ecu? or wud that be pointless and not worth while?!!

im feelin a bit creative, and would like to acheive an nice healthy 130-140bhp but keeping it N/A. would be interesting!!

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im feelin a bit creative, and would like to acheive an nice healthy 130-140bhp but keeping it N/A. would be interesting!!

I'm also going to try a well-modded 4EFE and see what I can get out of it, although I'm probably going to stick with the rolla mani, and a bigger TB, as it's much easier.

You might want to look into cams and raising the rev limit, I believe a higher rev limit with longer duration cams would be great for the 4EFE.

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I'm also going to try a well-modded 4EFE and see what I can get out of it, although I'm probably going to stick with the rolla mani, and a bigger TB, as it's much easier.

You might want to look into cams and raising the rev limit, I believe a higher rev limit with longer duration cams would be great for the 4EFE.

let me know how you get on with the higher revlimit ting lol anything at the moment, just wana do somthing new!

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5efe all the way, its a straight swap and you can run it on a 4e ecu!!

get a six speed, opex header, underdrive pully and decent element on the filter and ul see 130-140 thats what alot of guys with 5es got.

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Enzo meant OBX Mikey.

130-140bhp is pretty hopeful Geo bro, a huge increase for very few bolt on breathing and lightening mods from the standard 89bhp... Its not gonna happen man, if MJ put on those bolt-ons for his motor can you can guarantee he will get a 50% power increase? Unless there is proof Im not convinced :D

In that line of thought I'd hate to know what I might be producing with my extreme measures... :p

I wouldn't like to guess any figures until the car and mods have been tuned and dyno proven. There is no point in opening a can of worms and getting people's hopes up.

Its also not ideal to run it on a 4efe ecu because the 5EFE is a different CR ratio and designed to run on different maps so is only really for temporary measures, it will run but not ideally. If you can get a 5EFE ecu to work happy days.

Thats why people can't tell you what exact increases can be had with ITBs Jay because not many have done it on an EP properly. When people say supporting mods, they mean ALL other mods to complement the ITBs, i.e internal engine work, full header, full exhaust, lightened flywheel, etc etc. You need to think out the box and beyond, not just the forum.

Its a common tuning option on Saxo's and Pugs however but nonetheless is not cheap on either platform or ours.

Im going quad throttlebodies at the moment but I couldnt help you I'm afraid, Im a man on a mission and still working with things myself. I've waited so long to do this and have added much more than originally intended.

I have known of others to just slap on quad itbs with nothing else and failed.

It certainly sounds like your uncle can help with parts tho which sounds ideal. I bet you'll learn a lot about them from him.

There are people recommending to you the OBX but nobody besides myself has tried it on the 4EFE that I know of, do they know about any exact clearance or fitting issues? Do they know if it really gives any gains on the 4E especially as its intended for the 5E? Didnt think so. I wouldn't take any advice seriously unless it has been experienced or tried by the advisor. Assumption is the mother of all f**k ups.

There is a way to go about things, and just being after more power isnt the best way, you need to take other variables into account because things arent going to be straightforward for you. Each to their own however.

If you want some inspiration please feel free to check out my project thread or blog dude.

Peace

Joz

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on the 130-140bhp coment, was an avid user on paseopimp before it closed and thats what type of figures people were getting with those mods so its not entirely unbelievealbe it is a 1.5 after all

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