Hi there,

I'm just after a few answers....

I already know that a 3.5 will drop straight into the engine bay of my TF, but wat i dont know is that if it will comply under VicRoads without needing an engineering cert.....

I quote -

Change of Engine
1. Replacement engine is identical to the original engine, or is an option allowed by the manufacturer for the same model vehicle
The change of engine may be recorded by VicRoads provided that the registered operator or a motor mechanic, or dealer in that make of vehicle or an Automotive Engineer signs a declaration certifying the engine is optional for the vehicle model, and that all modifications made by the manufacturer for the same vehicle model with that optional engine, have been completed.

2. Replacement engine is not of a type offered by the vehicle manufacturer as an option for that vehicle or where alterations, or changes to the vehicle's frame or structure are made, and/or specially fabricated supports or structures are used
You will need to make an appointment at a VicRoads Customer Service Centre for an inspection of the vehicle to confirm the engine details. You will also need to complete a Change of Vehicle Description form [PDF 24kb] and provide VicRoads with:


a VASS Approval Certificate from a VicRoads Vehicle Assessment Signatory
an original receipt for the purchase of the engine as proof of ownership of the engine




So with a TF knowing you can drop a TJ motor in, is this an issue being that the TF does not come with a 3.5 as an option to the car??? Therefore needing to go through alot more money n hassle than is necessary?

If anyone can answer this question it would be very helpful. Thanks

well the ke-kf's all had 3.5L but i dont know if thats enough to fit it into option 1, i'd say yes, as all exterior components are similar if your getting a vrx motor for eg just the cam change...

The only thing the vrx had was the extra rocket cover to distinguish is from the executive was it not?

also you might be able to go to a few motor mechanics to do it if you get turned down...

it'd be alot easier if someeone has already done this in vic...

Your best bet would be to contact vicroads themselves. Only they know the 100% answer.

The KF Verada had the 3.5, Are you 100% sure the 3.5 wasn't even an option in the TF? If it was at least an option then it sounds as though you'll be right.

hey thats exactly what i need to know also as ive already got the 3.5 outta a TJ :D

im in S.A and got a TE... i rang mitsi and a KE verarda came with a 3.5 in it and all the other mechanicals are the same so i cant see there being a problem!!! :confused:

im yet to call regancy to confirm that its all good to change them but its not like we are puttin in a V8 instead of the V6!!!

any other info is also appreciated
cheers

well the ke-kf's all had 3.5L but i dont know if thats enough to fit it into option 1, i'd say yes, as all exterior components are similar if your getting a vrx motor for eg just the cam change...

The only thing the vrx had was the extra rocket cover to distinguish is from the executive was it not?

also you might be able to go to a few motor mechanics to do it if you get turned down...

it'd be alot easier if someeone has already done this in vic...



Yeh, as i understand the TJ II upwards had the cam change not just VRX but standard... i believe this would be best bang for buck in having the massive increase in torque and 15-20 kw more power....

Yeh, as i understand the TJ II upwards had the cam change not just VRX but standard... i believe this would be best bang for buck in having the massive increase in torque and 15-20 kw more power....
There was ~15Nm in torque improvement, hardly massive but that engine has 20% more torque native when compared to the 3.0 so you will notice a nice gain for 85% of the usable rev range.

the engine is physically the same size and it has been done in a tf. as long as you dont modify any of the mounts which you will not need to do it is fine. just notify vic roads of an engine change and they will need to sight the new engine number and away you go with your new rego sticker

There was ~15Nm in torque improvement, hardly massive but that engine has 20% more torque native when compared to the 3.0 so you will notice a nice gain for 85% of the usable rev range.


Thats wat i was comparing it to..... the 3 L, hence the MASSIVE torque difference....

Thats wat i was comparing it to..... the 3 L, hence the MASSIVE torque difference....
Yeah, gotchya. Thought you meant in the TJ range.

I think you would need to be worried if it were like a V8 changeover, the 3.5l was made for your TF albeit in a verada but that is just an upspec model, so no worries what so ever.

i really cant see there being a problem with it, especially seeing the Verada's had the 3.5, and its all the same chassis

A question regarding my manual gearbox, I understand that the introduction of the 3.5 in a manual magna meant a change of gearbox to a stronger build. Will my TF manual GB hold up with a 3.5 and will it just bolt onto the 3.5 like it does the 3.0?

The question of it actually fitting mechanically (the 3.5) is not the issue that's been raised. What's been raised is the legality of it. You need to contact VicRoads and make sure that way. It's the only way to be 100% sure.

As for the gearbox. I'm sure that it'll fit on, the only physical difference between the 3.0 and the 3.5 is 18mm in deck height. So the bolt pattern for the box will be the same and it's location in the engine bay will be also the same. As for strength. I don't know, I would assume they strengthened it for a reason...

Quote from the Autospeed Review in the other thread:


Again, the Magna Sports was sold with a 5-speed manual or 4-speed Sports Mode sequential auto. Interestingly, the TH Sports uses a stronger manual ‘box than in the TF – we believe that it’s the TF manual’s relative lack of gearbox strength that prevented initial use of the big 3.5.
:think:

A question regarding my manual gearbox, I understand that the introduction of the 3.5 in a manual magna meant a change of gearbox to a stronger build. Will my TF manual GB hold up with a 3.5 and will it just bolt onto the 3.5 like it does the 3.0?

as for my knowledge the only differences "Fitting" wise with the manual gearbox from 3.0 to 3.5 is the actual ( 'Sandwich Plate' / 'Engine Palte' ) or what ever its called and the 'Flywheel'

as for everything else bout strength im not too sure but im needing a new diff so im goin for the LSD :D

Is there anyone here that has done the 3.0L to 3.5L conversion, and can tell me how they went about it? What problems they had, how long it took...etc....

Also could i ask anyone who knows for a fact, Which would be an easier conversion, the 3.5L or the 3.0L MIVEC???

And which would have the best performance based on the 'on road factor' not 'on paper'.

And which engine would have the best performance after upgrades such as intake plenum, zorst, xtractors, and possible turbo/SC???? If no one knows for a fact of a 3.0 Mivec with forced air induction dont worry about answering the last question.

Thanks guys.

Also could i ask anyone who knows for a fact, Which would be an easier conversion, the 3.5L or the 3.0L MIVEC???
The 3.5.


And which engine would have the best performance after upgrades such as intake plenum, zorst, xtractors, and possible turbo/SC???? If no one knows for a fact of a 3.0 Mivec with forced air induction dont worry about answering the last question.
Theoretically the Mivec is the better benchmark however for the price of a Mivec, you could have some fun with the 3.5l or even your 3.0 and match it's output.

You probably wouldn't charge a Mivec engine. Mivec is designed for optimal N/A outputs. If you were going to charge an engine, you would want to work on something simplier to reduce headaches. Also, changing the cams on a Mivec will cost twice as much as our engines plus you'll probably find that it's not worth it so much anyway.

Thanks Redav. Looks like i will be going ahead with the 3.5 conversion and working on that.

Has anyone here done the conversion from 3.0 to 3.5? I would still like to know how you went about it.

There's a coupla people around here. Not sure who off hand.

I have converted my tf wagon from a 3l auto to a 3.5l manual, i just dropped the whole subframe motor and gearbox stay intact, it was a pain in the ass took bout 6 hrs to physically swap the motor and about 12 hrs worth of wiring headaches. i ended up swapping all the wiring in the whole car. Legality wise i just drove it to queensland transport and they sited the engine number and it was all over and as far as i know the tf did not come with a 3.5

I have converted my tf wagon from a 3l auto to a 3.5l manual, i just dropped the whole subframe motor and gearbox stay intact, it was a pain in the ass took bout 6 hrs to physically swap the motor and about 12 hrs worth of wiring headaches. i ended up swapping all the wiring in the whole car. Legality wise i just drove it to queensland transport and they sited the engine number and it was all over and as far as i know the tf did not come with a 3.5


yer i know but the Verada did.