Turbo

[jay morais]

hi, i just recently installed a toyota 2c turbocharger to my standard feroza engine and am wondering whether it could witstand the pressure, in need of advise.

thanks, regards.
Jay Jay

[daRangie]

It's all in the tuning...
Get your Feroza onto a dyno with a competent operator so they can check that you are getting the correct air/fuel ratio. Keep the boost low (around 6psi or so) and you shouldn't have dramas, as long as your fuel supply is up to the challenge. Perhaps look into getting an intercooler as well, so the inlet air is as cool as possible...

Good luck.

Cheers
Randal

[jay morais]

Thanks Randall,

By the way, i have an intercooler installed too, thinking of adding 2 extra fuel nozzles with a fuel regulator for better performance. will this help to eradicate any dramas from the engine?

Regards.
Jay Jay

[daRangie]

Can do, if youre not getting the correct fuel supply in the first place. Stock injectors should be able to handle a certain amount of extra fuel requirement, but you need to make sure your stock fuel pump is up to the task as well.

Before you go adding things get it on the dyno to measure the performance of your current setup. The printout, along with the decent operator, should be able to tell you what you need, if anything.

Cheers
Randal

[rocknferoza]

Are you still running the standard computer or an aftermarket like a microtech, wolf etc. Reason I'm asking this is the ferozas tend to ping (detonate) Especialy on regular unleaded fuel. Make sure it's properly tuned and it should be sweet.

Just hope your gearbox can handle the extra power.

[murcod]

Your ignition timing is going to be the biggest problem- turbo engines require a different advance curve. Then you'll most likely find out the gearbox can't handle the extra torque.

[jay morais]

Thanks all,

instead of all this dramas from the engine, what would be a suitable turbo engine that i can install into my feroza without any extensive modifications?

what about changing pistons to more durable type?

Regards,
jay jay.

[daRangie]

How about an SR20DET?

http://datnet.org/new/photogallery/jamb ... /index.htm

[BabyGodzillaGTi-R]

How about the Holden V6 conversion?

SR20s are hopeless.......

Low end torque is crapy.

I still find the torquest among the 2litre turbo is the 4G63T.

[daRangie]

I must agree with you... How I do wish I had more low end with my Silvia. Hopefully a ballbearing turbo would assist that...

If I required a replacement motor I would seriously consider dropping in a naturally aspirated SR20 and adding the turbo gear. Higher compression, and therefore better low down (off boost) response.

[rocknferoza]

Thanks all,

instead of all this dramas from the engine, what would be a suitable turbo engine that i can install into my feroza without any extensive modifications?

what about changing pistons to more durable type?

Regards,
jay jay.

It would cost alot more if you change to another engine as you will need 2 change the gearbox etc.
If you only run low boost I don't think you'd need 2 change the pistons unless you plan on going crazy.


If I was to turbo my feroza I would only run a max of 9psi unless I had the gearbox strengthend.

[FeroZul]

How about an SR20DET?

http://datnet.org/new/photogallery/jamb ... /index.htm

That's the ex-rally Feroza with twin shocks and all the fruit right...

my question is, how does it stay legal with a bloody air filter coming out where the left headlight used to live?

Or is that set-up a show special ? Looks friggin silly imho.

[jay morais]

Thanks for the advise guys,

Anyway, i will be adding those extra fuel injectors thats comes with an extra computer box based on some advise i got from this supposed to be turbo specialist back here, if needed i might change the pistons to allow maximun boost, see how it goes.

Well, if after all this has been done and i still can't keep up with other machines, i will just pick on other ferozas back here.

Will keep you guys posted on updates.

Regards.
Jay Jay.

[tufferoza]

what sort of i/c are you useing? i am building a w2a set-up for my turbo conversion. already made most of my log style manifold (simular design as i made for my Mr2). saving up for the turbo i want to use now (Subaru GT Forestor factory turbo).

i am only planning on running a max of 5psi. i'm not after a speed machine, allready got me one of them . i just want that lil bit extra power with the big tyres in the soft stuff etc. i am hanging for more funds so i can get it done.

do you have any pics of your set-up?

[murcod]

If you're after a GT Forester turbo (or XT) then check out these forums : http://www.gtrydaz.com/forum/index.php . A lot of the Forester owners on there upgrade their turbos to larger WRX spec ones- should be able to pick one up cheaply.

[tufferoza]

hey thanks for that link murcod thats the turbo i am after alright. i have a customer from work that has a gt forestor and he said exactly the same thing about them upgradeing to the wrx turbo. he has done it himself but wont sell me his old turbo.. grrr
my minimilistic (<spelling?) spare parts wage has me doing my projects very slowly, but i do get there. hopefully when i get some spare $$ i can pick one of them turbo's up nice and cheap, as i need one to finish my manifold.

[murcod]

No worries. I'm sure I saw a stock turbo on one of the Subie forums and they wanted under $300 IIRC?

[rocknferoza]

Yeah I saw a TD04 off a WRX for $250
Check the 4 sale section in the link Murcod posted up.

[murcod]

I think the TD04 is bigger than a stocker? The stock ones go for next to nothing as nobody wants them.

An old model Lancer GSR turbo 1.8l would be a good choice. They come on boost really early too.

[tufferoza]

the wrx turbo isnt what i am after, i have a spare t25 like what i have on my mr2 (tempted to just use that, save buying another). but the good thing about the gt forestor turbo is the very small ex housing that will produce boost straight off idle, would basicaly be like having a s/c on there.
the way things are going, i'll probably end up useing my t25 though. i want to finish my manifold and bolt the sucker on. haha


still waiting to see and hear more about jay morais's set-up.

[murcod]

If you do a search there was a guy from NZ who did a set up on his Feroza. Think he blew the gearbox within a week and took it all off and sold it!!

[tufferoza]

mate you've given reference to the gearbox weakness many times, and it has been noted.
i've done many performane/body mods etc with the vehicles i have owned that people said cannot be done. maybe i just have some good luck with my automotive skills, things just seem to work ok for me.

DIY yourself performance mods IMO are a great way to learn how things work. been doing it for years and i wont stop now.

[murcod]

Think you took that the wrong way?!

I was trying to help- there is info on here on how he set his up.

Try the Daihard forum too. At least one guy has a turbo Feroza on there and there are a few turbo HD-E Charades on there and info on the net.

[tufferoza]

sorry mate, i think i might of too. too many late nights on this damn computer i think.

i know how and what i am doing to mine, interested in seeing others conversions. i have done a search of this board but maybe i wasnt holding my tongue the right way.

[Dangerous Dave]

Tuff - What type of steel do you make a Turbo Manifold out of. Is it Stainless or is normal exhaust steel alright. What is the trick. Is it to make each pipe the same length from Turbo Flange to Manifold Flange?

[tufferoza]

i use steam pipe (butt welds), they are commonly used with DIYers and dont have the cracking problem stainless tubing can have when used for turbo manifolds. i made the one for my Mr2 out of the same material.
its thick walled which not very good welders like me dont have to worry about blowing holes in..

when i was researching my manifold style options for the Mr2 turbo project there was basicaly a log style or the equal length style (like you mention). the log style turbo manifold is capable of producing/flowing up to 350hp (with the right tubo etc) and seeing i am not going to want (or have the $$$) to have over that amount of power i chose a log style manifold. the equal length manifolds are spose to produce more power in the mid to hi rev range over a log style, where the log style is spose to help spool the turbo earlier. the log style is deffinatly easier to build.
the turbo i have on my Mr2 (useing a T25 CA18DET turbo .49 a/r ex and .48 a/r comp) spools at around 2700rpm, reaches 12psi at about 3500-4000rpm and holds that to 7500rpm.
attatched are a couple pics of the one i made for the Mr2. the feroza's log is the same but my collector will be kinda straight off the log, not useing a big dumpy like the one for the Mr2.

[murcod]

Here are some posts about that turbo one. His writing is a bit hard to understand, and I doubt very much it came on boost @ 900RPM like was stated?!

http://www.outerlimits4x4.com/PHP_Modul ... php?t=8900

http://www.outerlimits4x4.com/PHP_Modul ... php?t=9108

[tufferoza]

haha.. i agree, his language is a little hard to understand. pity he didnt know anything about the turbo set-up or how they work.
given the right sized turbo (low exhaust a/r etc.) you could get a turbo to spool at 900 rpm, problem is with real small ones that the top end dies in the ass. would be good though when low down torque is normally preffered for 4wding, thats why i was thinking of useing the forester one.

oh well, back to the shed. plenty of fibreglassing to do, and maybe a little more welding.

[murcod]

I test drove a Forester XT the other week- the boost does come on early, but you'd still be looking at least 2000RPM before boost starts coming on.

[Dangerous Dave]

Food for thought... thanks Tuff