info on rev1 to rev3 conversion or engine swap? whats best?

[neoeire]

hi all,
been a while since i posted on here.
i have a rev1 turbo with 76k and id like to up the horses over time, but i badly want my ssqv dump valve back on the car asit caused problems on my rev1 with over fueling etc... plus rid of the afm is nice.

my question is... what is my best choice for a rev 3.
swap the ecu, map sensors and other bits from a rev3 turbo?

maybe rev3 head too?

or buy a rev 3 engine, loom, ecu etc (not the turbo as ill keep the ct26 til i upgrade it.)

any info or links with how toos and ball park prices for both wood be great.

i was planning the conversion and was about to start collecting the parts so i can do it in the summer when i was doing a cam belt change,
but read somewhere that there was sometimes running problems with it.

really not sure what to do right now so any help would be great.

[garry goodall]

found an interesting link the other day on differences between rev 1 2 and 3

http://www.mr2turbo.info/diff.html

should help with the differences and whats involved in a conversion

i think it would be more cost effective buying a rev 3 engine unless you have mechanical skill, the labour involved in adding bits to your engine will probably out weigh the cost of a second hand rev 3 engine (e.g thought my valves had gone and was gunna cost me nearly a grand in labour exc parts lol )

things I can think of what you need:

head ( rev 3 is different more flow or something)
inlet manifold
ECU
turbo ( 26 is OK as like you said upgrade later)
map sensor
exhaust manifold is different (more/less studs i believe)
injectors

possibly more

try eBay for a quick comparison on parts needed

[/u]

[neoeire]

Hi thanks for the info.
Yea ill be doing all the work myself. Bit of a hobbie with me plus i hate anyone working on my car. Lol

[garry goodall]

yeah I know what you mean, I do all the bits myself aswell unless its engine related, garages are total rip off in my opinion, I like the satisfaction of doing it myself.

good luck mate

[neoeire]

Im surprised that there isnt a Sticky of what options there is for rev1 to rev3 conversions as it seems to be a popular subject. Kinda hard to find detailed info on it.

Has anyone on here done them?
-Rev1-3 Conversion without the head change?
-Plus with the rev3 head?
-And then rev 3 engine swap?

Im sure there lots of people that could benefit from some details on whats in volved and all parts needed for people who want to do it themselves. Plus if there was any running problems after?

Maybe even make a sticky of it.

[Peter Gidden]

Plus if there was any running problems after?

There should be no running problems if any of the conversion options you mention are done properly.

[craig]

Me personally, I would go with the full rev 3 engine conversion

[djpkins]

http://www.biststone.com/coyote-mr2/how ... ogen3.html

[neoeire]

The more i read and price checking. Its beginning to be cheaper to sell my 2 and buy a rev3 lol.

What is the going rate for a rev1 turbo engine, ecu and loom? Basically everything i would have to take out for a rev3 conversion?

Shes got 76k and due 1st cam belt as far as i know. (prob done already but never trusted past owners of cars with that kinda thing)

[Peter Gidden]

What is the going rate for a rev1 turbo engine, ecu and loom? Basically everything i would have to take out for a rev3 conversion?

Anything from £750ish upwards. Difficult to tell in the current market.

Shes got 76k and due 1st cam belt as far as i know

1st cambelt change was due 5 years old, 2nd 10 years, 3rd 15 years, and 4th when 20 years old. (Assuming each age limit reached before 60K miles.)

[neoeire]

What is the going rate for a rev1 turbo engine, ecu and loom? Basically everything i would have to take out for a rev3 conversion?

Anything from £750ish upwards. Difficult to tell in the current market.

Shes got 76k and due 1st cam belt as far as i know

1st cambelt change was due 5 years old, 2nd 10 years, 3rd 15 years, and 4th when 20 years old. (Assuming each age limit reached before 60K miles.)

Well the kid i got her from didnt know anything about cars and only had it 6 months which was to much for him. Owner before was ment to be a club member who painted her pearl and done some stuff to her.
Just no history with car so as far as im concerned needto be done asap. Along with a refub and rebuild. Which i was looking farward to til i realized i do need a rev3 and its going to sting my pocket. No point tuning her when im geting rid of her heart.

Well if everyone can keep the info coming and any links for others and me to work from would be great.
I think ill keep an eye out for a damaged rev3. As a donor.
I take it i will need to change all the loom, block, alternator maybe gearbox, ecu and every other thing connected to the engine? Any thing else i wan off her?


Thanks all for the advice. Very much appreciated

[neoeire]

What would i have to change in a 1990 rev1 turbo to be able to swap to rev3 turbo engine. Just found out that gearbox and clutch should fit with no problems.

Or is the celica gt4 st205 a stright fit? Plus anything else out if it work? Like maybe ecu or loom or something?

[CJ]

Anything from £750ish upwards. Difficult to tell in the current market.

I think that is very optimistic in the current market. I say that as I recently went hunting for a full turbo conversion for my UK Rev 4 and got things far cheaper than that.

[planted1]

St205 celica is basically rev 3,
but the position of the alternator etc is different and would have to be changed,you would also need the brackets.
Most important bit is the wiring loom from front passenger footwell to engine bay and then engine loom including engine bay fusebox,
these are not easy to come by and allways sell quite high.
map sensor,iat sensor,coil,ignitor,etc etc,
ive done this so have many others,my advice would be sell your car and buy a rev 3+,probably cheaper in the long run,
plus you get the benefits of larger arb's,different suspension geometry,
and a host of other slight improvements over earlier revisions.

[Shmed]

St205 celica is basically rev 3,
but the position of the alternator etc is different and would have to be changed,you would also need the brackets.
Most important bit is the wiring loom from front passenger footwell to engine bay and then engine loom including engine bay fusebox,
these are not easy to come by and allways sell quite high.
map sensor,iat sensor,coil,ignitor,etc etc,
ive done this so have many others,my advice would be sell your car and buy a rev 3+,probably cheaper in the long run,
plus you get the benefits of larger arb's,different suspension geometry,
and a host of other slight improvements over earlier revisions.

+1 Just buy a rev 3, it'll save you a packet in the long run.

[neoeire]

Think i agree with u all on that. A rev 3 would be less hassle.

But i think i will play with this rev 1 1st and just make her worth something and pic up a rev 3+ later.

End of the day shes a nice car and deserves some attention.
While the body and engine is solid on her. She does need some tlc.
Like i got up. Walked to the car and saw a small puddle of fluid behind the front right and rear left wheel. Brake fluid . And brakes pedel floored.
Guessing the old rubber lines packed in. So just bought hel braided.

Curious since ill be redoing my brakes tomorrow. With a standard brake system and braided lines. (yellow stuff and 40 grooved discs all round.)
Can i use dot 5.1 on her with no issues or stick with dot 4?