[Mk2] [Turbo] Rev 3 Head on a Rev 2

[Shmed]

So I have my Rev 3 head (finally) and will be putting it onto a rev 2 block (eventually), but I'm trying to pre-empt what other bits I'll need. So far I have (or know I need):

Rev 3 Timing Belt
Timing Belt sub-cover 3 & 4
Timing Belt Cover 2
2 x Cam pulley bolts (my head had no cams)
Rev 3 Rocker cover
Rev 3 Head gasket set (not specifically for the head gasket)
Rev 3 Manifolds
Rev 3 Water Outlet
Rev 3 Spark Leads

Is there anything else? What about the Cam Belt idlers? Should they be rev 2 still? What about the distributor?

[Century Motorsport]

You need a rev 2 timing belt fella.

Also, the rev3 catch can is handy to have. And don't forget rev 3 throttle body and ancilliaries.

[Shmed]

Oh, I thought it was a rev 3 belt I needed

I believe you though.

I have a catch can on my rev 2, could I just use that? Which ancilliaries are we talking? I won't need to change the alternator will I? I have a rev 3 inlet manifold and throttle body and sock (cheers JJ). Still need exhaust mani and a cam cover, which I believe JJ gave to you

No turbo stuff matters.

Is that it?

[darcy]

I am doing the same as you with the rev2 block rev3 head. The cam-belt cover different, so too is the metal backing plate behind it. Alternator bracket is different AFAIK but should not be a problem as you do not need to change this.

Word of advice on the Manifold- mine was 1.5mm out of plane, ie very warped. This cost 55notes to rectify as the machine shop had to make a jig before skimming it. So my tip is - find a straight one, as opposed to a cheap one!

Paul

[darcy]

rev2 rev3 spark leads are to the best of my knowledge the same - they are dizzy-cap dependent it was the rev1 that tended to have a push-on rather than clip-on lead-to-cap interface. Dizzy unit itself is exactly the same as rev2.

Inlet manifold may have different support stays, have not checked this yet though.

Best of luck,

Paul

[Shmed]

Cheers all,

So I've managed to source a throttle body and sock off of an ST205 GT4, and the rocker cover, exhaust manifold and cam belt covers. Will I have any issues with the TB? Does the throttle linkage come from the opposite direction?

Also, on the topic of the leads, is the only difference between rev 2 and 3 leads the distributor plug? If so, should I stick with rev 2 leads and dizzy, or should I change to a rev3 dizzy and leads?

[Shmed]

Oh, and water outlets, talk to me........

I know they're different between rev 2 and 3, but what about getting one off a Celica?

[gazrev1tubby]

You need a rev3 timing belt mate - I'm doing the exact same conversion and have been working on the car over the last couple of days. I've messed around all day today trying to get the rev1/2 belt to fit but it's too long. A rev3 belt has 1 tooth less ! I've just spent 2 hours on the crank pulley bolt getting it undone as I'd used loctite on it last time - foolish ! Tomorrows job - fit a rev3 belt and carry on
You will also need to cut off the pipe support from the rev2 coolant pipes ( it's on the metal pipes around the back of the block (coolant elbow corner)) as the bracket will stop the exhaust manifold going on

[mr2c8cya]

You need a rev3 timing belt mate - I'm doing the exact same conversion and have been working on the car over the last couple of days. I've messed around all day today trying to get the rev1/2 belt to fit but it's too long. A rev3 belt has 1 tooth less ! I've just spent 2 hours on the crank pulley bolt getting it undone as I'd used loctite on it last time - foolish ! Tomorrows job - fit a rev3 belt and carry on
You will also need to cut off the pipe support from the rev2 coolant pipes ( it's on the metal pipes around the back of the block (coolant elbow corner)) as the bracket will stop the exhaust manifold going on

when i did a rev3 head on rev2 block i used a rev2 belt you would use a rev3 belt if you are also running rev3 oil and water pump

[Shmed]

Confused I am. I now have two people saying rev 3 belt, and two saying rev2.

I guess I'll find out soon as I'm dropping the engine next week and starting to assemble the new lump. I'm using rev 2 oil and water pumps.

Gaz, I'm thinking of replacing the hoses round the block with braided hoses. Will that sort the chopping of a bracket?

[craig_mr2_mk1]

I believe the Rev 3 oil pump has 2 more teeth than the Rev 1/2 pump so I think if your using the Rev 1/2 Pump then I'd say it'll be the early belt you'll need & there's no difference in cam pulleys either. I haven't done this conversion myself so I'm only going off the info I have to make a suggestion.

Craig.

[greeny]

IIRC, just use the same rev belt for the rev of oil pump pulley your using.

[gazrev1tubby]

Nope, afraid not guys. Mine is a rev 1 block, rev 1 oil and water pumps, rev3 head and rev3 idler pulley. Rev3 hydraulic tensioner and I need a rev3 belt. I've had the rev1 belt on/off half a dozen times and it just doesn't fit tight enough. I ended up calling Luke at pacific works and he confirmed a rev3 belt was needed as it's slightly shorter

[gazrev1tubby]

Gaz, I'm thinking of replacing the hoses round the block with braided hoses. Will that sort the chopping of a bracket?

If you can find a way of attaching the hoses to the water pump then it'll be a much better option

[DiYMCRT]

Rev3 hydraulic tensioner

just wondering why you used the hydraulic one arent they £120 to replace as opposed to the old spring tensioner bein g a few quid??

[gazrev1tubby]

Rev3 hydraulic tensioner

just wondering why you used the hydraulic one arent they £120 to replace as opposed to the old spring tensioner bein g a few quid??

To the best of my knowledge, all turbo models use a hydraulic tensioner.

The only engine that use the spring type is the early 3sfe ?