Tuning mk2 tjet

[coleio]

weve all been there at some stage really, 4am thinking about what kind of car we can build, the last few weeks i have been considering a mk1 sporting to gt conversion ( there arent that many over in ireland, so a conversion is the best choice)
then my lil bro comes home in a hgt which made me all jelly after taking a spin. so last night it dawned upon me. the tjet. in a mk2

ok so wont blow anyones minds, i havent looked it up at all but im guessing its been done before so im here for advice.

as far as i can remember the 1.4 tjet and the 1.2 16v use the same block right? what im wondering is if i was to attempt this conversion whats involved.
do i need
custom mounts for engine and box
are the driveshafts the same or do i need custom lengths and modified hubs or cv joints?

or

is it as "simple" as changing crank, rods,pistons and adding a turbo,manifold and other necessary bits to the 1.2 16v?and then of course adding standalone management, which i plan on doing either way

any help guys?

 

[fingers99]

There are a lot of differences between the 1.4 16v and the T Jet. A lot. They started in the same place, but.......

Differences include:

Pistons
Rods
Sump
Block
Crank
Cams
Exhaust valves

By the time you've bought forged pistons and forged, fully floating gudgeon pin style rods. you've spent enough to buy a second hand T Jet engine.

There are two gearboxes (possibly 3!) used, depending on which car you get the T Jet from. The 500 Abarth (but not, it seems, the 500 Abarth from the race series!) uses the old FIAT/Alfa C510 box. This uses conventional unequal length driveshafts. Should be possible to swap the cups over to get something to suit the Punto.

The Bravo T Jet uses a box based on the GM M32 box -- this has a cross shaft (and outer bearing) which allows the use of equal length driveshafts. It's said that some early T Jets used a Mitsubishi box, similar to the M32.

Dunno if anyone has done it to a Mk1 yet, but there are at least two T Jet Seicentos in Poland, another in France.

 

[coleio]

cool, thanks for the info. the engine and box would be coming out of a grande punto.

what i was referring to with changing rods, crank and pistons was using genuine parts from fiat, ordered off a tjet chassis number.

my family has a fiat dealership so i can get great discounts on the parts. if they actually fit the 1.2 16v engine that is

i mean for me to find out if they were similar would take weeks, maybe months bouncing emails back and forth between fiat technical in the uk and even after all that they could still be wrong.

are there any online resources for this kind of stuff?

 

[coleio]

also does anyone know the specs for the different turbos, the 120tjet, and the two abarth specifications?

 

[fingers99]

w

hat i was referring to with changing rods, crank and pistons was using genuine parts from fiat, ordered off a tjet chassis number.

my family has a fiat dealership so i can get great discounts on the parts

I still think it would be a crazy way of doing it. Can they not get you a T Jet engine cheap?

PM me your email address and I'll bung you some stuff.

Remember, too, that the Mk2 is canbus: this puts up the price of the aftermarket ECU considerably.

AFAIK the different power outputs are primarily down to the turbo and mapping.

 

[coleio]

w

I still think it would be a crazy way of doing it. Can they not get you a T Jet engine cheap?

PM me your email address and I'll bung you some stuff.

Remember, too, that the Mk2 is canbus: this puts up the price of the aftermarket ECU considerably.

AFAIK the different power outputs are primarily down to the turbo and mapping.

it does seem a bit crazy, but i have a fully kitted out workshop with just about every tool i need.
ok, so not that much to justify it all but ill be stripping out the engine (for painting, depending on the mileage might need to hone cyllinders etc...), head is coming off to be ported and polished

so, its not much of a leap from that to changing the crank, rods and pistons (if they fit) given the amount i could save. ok so theres more labour but im pretty broke ha

canbus???

and unfortunately not, well, im gonna ask em anyway but they never bother doing anything on engines for some reason. ****ers...

yeah its all down to turbo and mapping. (dont know about cams, doubt they would go to that trouble) but i have a turbo supplier who can get great prices on turbos, with same manufacturers warranty so if i had the esse esse turbo spec, might put it to them. (have been buying from these guys for years, never had any problems before someone opens a can of worms about aftermarket turbos)

pm'd

 

[coleio]

forgot this three times now, are the sporting and hgt back axles and brakes the same?

 

[flisko]

my family has a fiat dealership so i can get great discounts on the parts. if they actually fit the 1.2 16v engine that is

300% cheaper parts, thats quite good

 

[coleio]

300% cheaper parts, thats quite good

go home with your irrelevant a-hole post

 

[flisko]

go home with your irrelevant a-hole post

excuse me?

u know its true

 

[coleio]

excuse me?

u know its true

oh really now? care to back up this false statement with some evidence?

remember your talking to an Irish dealer rep here, not a Uk one

 

[coleio]

update on this in case anyone else is interested in knowing, the 1.2 16v has 1.2mm smaller bore :/

 

[flisko]

your family has u in the dark

lets take this item for example

Choke & CARB Cleaner

raw price in china for 6000 units is 0.6 dolla per unit
shop then sells 1 unit for around 5 dolla

 

[fingers99]

update on this in case anyone else is interested in knowing, the 1.2 16v has 1.2mm smaller bore :/

And the 1.4 has a longer stroke, but the same block (although the T Jet block is different still).

We of the Cento side knew all that. Mk2 Puntistas tend not to mod (gets the slippers and pajamas all dirty).

 

[PuntoHowTo]

So your parents run a fiat dealership and you have a fully kitted out workshop but you've never heard of canbus....!?

And you're broke!?

But spending hundreds if not thousands on engine parts to tart up an old 1.2 mk2 is the better option than simply dropping a working 1.4 t-jet engine in for probably no more than a grand.

And you're coming on an Internet forum to ask parts information when all that information should be available at your fingertips

 

[coleio]

So your parents run a fiat dealership and you have a fully kitted out workshop but you've never heard of canbus....!?

And you're broke!?

But spending hundreds if not thousands on engine parts to tart up an old 1.2 mk2 is the better option than simply dropping a working 1.4 t-jet engine in for probably no more than a grand.

And you're coming on an Internet forum to ask parts information when all that information should be available at your fingertips

like i said, i would be waiting weeks for info from fiat technical. it not like we have a special version of eper that gives us dimensions of each part.

1.4tjet would end up costing twice as much. though now with the different bore sizes i will have to change complete lump

 

[coleio]

and i havent worked there in a few years so no, i cant remember what canbus is. is that ok dude, or do you have a problem with that too? if you dont have any info pertinent to the actual questions dont post

 

[PuntoHowTo]

go home with your irrelevant a-hole post

oh really now? care to back up this false statement with some evidence?

remember your talking to an Irish dealer rep here, not a Uk one

and i havent worked there in a few years so no, i cant remember what canbus is. is that ok dude, or do you have a problem with that too? if you dont have any info pertinent to the actual questions dont post

aside from your obvious anger issue its well worth pointing out in one post you're claiming to be a dealer in the next you've not worked there for years!

essentially the family has a dealership and you think you know it all not that you work there, which brings into question how much access you have to complete such a project and how much knowledge you have if you can't remember what canbus is....(despite talking about standalone management systems) as a business I woundn't tollerate a family members scrapper taking up ramp space when there is paying work on the forecourt.

and if anyone is in any doubt about your attitude here is a quote from a post of yours back in 2008 when you where planning on fitting another engine to an Uno

fair enough but i never asked about the 1.3 did i... if i wanted info on that ( which i didnt and wouldnt have needed ) i would have asked.

look mate i know you were only trying to help but its the same on just about every forum, if knobody has any helpful info on the topic at hand they nearly alway try and bring you down a different route... how did you think what you said would be helpful, if i was askin about a 1.6 engine conversion it would be fairly obvious that i would have already thought about an uno turbo and decided against it... why else would i have inquired about a 1.6 in the first place???

I suppose that's all finished now

Don't come on here acting the big I AM and throwing your weight about if you expect people to help you if the first thing some one says you don't like you jump down there throat

 

[fingers99]

1.4tjet would end up costing twice as much. though now with the different bore sizes i will have to change complete lump

As I said, many years ago (or now it seems so) the 1.4 and T Jet have different blocks. The differences are subtle, but not unimportant. The 1.2 and 1.4 have different bores (but the extra stroke on the 1.4 is a function of the crank). The 1.4 T Jet crank is forged which is one reason -- perhaps the main reason, why longterm the n/a lumps don't like more than 150bhp being put through them. The T Jets, with proper fuelling, will easily take 200. The sump is stiffer, too.............

Believe me, all the little tuning houses that had so much success getting Works performance from Mini Cooper Ss at less than John Cooper S Works prices looked hard at getting T Jet performance from the 500. No-one made it a commercial proposition although the potential profits were big.

Now, I'm not currently enjoying a sexual relationship with anyone at a FIAT dealership, but pistons. rods, crank, block, sump at new mates rate prices is going to cost more than a s/h T Jet. And you get all the other nice bits thrown in -- cams -- I know they're different (because FIAT tell me so and because anyone with any experience of turbo engines would bet on it), exhaust valves that won't loose their heads or melt, modified cooling in the (different) head, injectors that can cope with the fuelling demands, the turbo itself, a rather neat oil/water heat exchanger......... and so on.

 

[coleio]

aside from your obvious anger issue its well worth pointing out in one post you're claiming to be a dealer in the next you've not worked there for years!

essentially the family has a dealership and you think you know it all not that you work there, which brings into question how much access you have to complete such a project and how much knowledge you have if you can't remember what canbus is....(despite talking about standalone management systems) as a business I woundn't tollerate a family members scrapper taking up ramp space when there is paying work on the forecourt.

and if anyone is in any doubt about your attitude here is a quote from a post of yours back in 2008 when you where planning on fitting another engine to an Uno



I suppose that's all finished now

Don't come on here acting the big I AM and throwing your weight about if you expect people to help you if the first thing some one says you don't like you jump down there throat

i didnt claim to be a dealer once. i stated that i was part of a family dealership also didnt claim that i would be doing this project in a running and open garage either. i said i had access to facilities and tooling. ie my grandparents closed down garage.

now your questioning my knowledge? i forgot what canbus was, like many other stuff since working there because my interests have veered towards race engine tuning. fluid dynamics, volumetric efficiency etc... when i worked there i was a parts man, not a technician btw, and at the time (between the ages of 18-23) i was more knowledgeable on fiats than any other parts man in our lil country. im not bragging, that was a well known fact

and i stand by that post from... 2008. because what i aid was right. in no uncertian terms, i didnt have an attitude there, you dont see me using any profanity, he posted in the thread for the sake of posting. i just stated people should stict to the question at hand.

and no, i never did that conversion. i had the uno, and the doner car (and still have) but my auntie passed away, and shortly after my grandad did aswell. i had gotten around to getting involved with it again but found the uno shell rotten, and decided against it.

you have just as much an attitude problem as i have here (that being pretty much none)