16v conversion

[KACK]

Hi All ,

I have a 85 33 and am planning on transplanting a 1.7 16v injected motor into it for doing some hillclims and sprints

was after any pointers, tips or probs anyone has come across performing this transplant.

will it mate up to the existing gearbox?

I also have the power steering out of the doner vehicle, will this fit?,

Has anyone lightened the flywheel, if so by how much

any help would be appreciated

cheers

[budweiser_sud]

Interesting project - my thinking would be that if you are preparing a 33 for hill climbing and you want a 16v engine, it might be more cost effective to buy a 16v 33

But, this is what this list is all about!

I would say as long as you can get a hold of a complete 16v engine with all the throttle bodies, loom, ecu, sensors etc you are pretty well good to go to drop it right in. It will mate to your existing gearbox. If you are getting your flywheel lightened, it would make sense to rebuild the engine and have this done so it is balance with the crank shaft and clutch assembly. Rebuilding a 16v engine doesn't have to be expensive - you won't need to replace pistons or rods if its been looked after.

The complexity will be wiring it in, but if you have all the bits just be thorough and take your time to connect everything up.

Good luck

~Benjamin

[lenus]

I agree with the bud, it would probably be cheaper and easier to use the 16v 33 instead of transplanting.

IMHO, the older shape 33 doesn't really have much benefit compared to the 16v. I'm pretty sure the difference in weight is because of the extra things in the 16v like power-steering and aircon and the heavier 16v engine. So if you are thinking of doing this because the older 33 will be lighter, you might want to reconsider!

A sud or a sprint will, however, be lighter.

And I can't speak for the 33, but when I tried to fit the power steering to my sud, I found that the splines that connect the steering column were different to that on the steering rack. So while it would be possible by changing those splines - it wasn't a direct fit for me.

The engine will go straight in though, but you will need the 16v crossmember.

Hope I was helpful for you!

Cheers.

[dave33]

Been there, done that. I had an 89 S2 car set up for racing and didn't want to start preparing another shell all over again. A Sud would probably be a bit lighter, but I was keen to continue developing the 33. Spares are lots easier to get !

The fuel lines and fuel tank are different, moved them over from a donor car, also the electric fuel pump needs fitting, also the fuel filter in the engine bay. Front cross member has already been mentioned.

The wiring is reasonably straight forward if you work logically through it, although there's plenty of it !

Your current g/box will fit but you will need to grind a little semicircle in the bellhousing to accommodate the crank angle sensor.

Please budget on new cambelts and pulleys if needed !!

If you have a 16v with powersteer and aircon, the crank pulley extends too far out in front, and needs modification or replacement with a custom made item or it will foul the radiator.

Also the radiator fan is a challenge - bugger all room to fit it in there, so I ended up finding a non-Alfa one and fitted it to the outside, modifying the grill & bumper slightly (but unnoticeable from the outside.)

You'l need to transfer the exhaust system too.

If it's for competition, forget the power steering IMHO. It is adding weight and dragging power from the motor - why would you do that ?

I also grafted in the bracing pieces from the fire wall to the chassis rail on each side of the engine bay. The S2 33s are prone to cracking on the inner guards and the chassis rails over time. Worth doing, although its a fiddly job as the fire wall isn't dead square on the S2 like the suds & S3 cars are.

That's the bad news, the good news is that the 16v is a good bit quicker than the 8v 1.7 in stock trim. Took 1.5sec off my previous best lap time at Pukekohe race circuit, with the set-uo otherwise the same. It runs sharp and clean, but is a ***** to change the spark plugs on, although I haven't had to yet. Has a rev limiter at around 7K rpm I have found too. :-)

Best of luck, it's a bit of a job, but very do-able.
Happy to assist further if I can.
David F

p.s. I haven't tried playing with lightening the flywheel yet...

[KACK]

Lenus,

Would use a 16v 33 if i could find one over here.

Only sprint/sud ive seen for sale over here in the last six months had rust holes that i could fit my head through.

I had my 33 already, then the 16v engine became available in a written of car from the adelaide..

Not sure about the power steering, got given it with the rest of the parts, its just a thought at the moment.

cheers

[veloce sprint]

the double skinned firewall also needs modification to fit a power steer rack , it is not a bolt in job ,

[dave33]

Did I get it right otherwise ?
:-)

[veloce sprint]

pretty much smack on i recon Dave , suppose we could mention not to just machine off the air con groove in the front pulley as the thing will come apart shortly after , like a stage of the targa or some other most inconvenient time ... ay Chris..

[dave33]

Yeah, I got a nice custom turned ally job just like Eds one !!
:-)

[lenus]

those pulleys' come off?!:!!|SAQD

[KACK]

[quote=dave33;758187]Been there, done that. I had an 89 S2 car set up for racing and didn't want to start preparing another shell all over again. A Sud would probably be a bit lighter, but I was keen to continue developing the 33. Spares are lots easier to get !

Quote:

This my logic as well, i already have the car and engine so i might as well use it

[dave33]

Pretty sure the clutch was the same on both the 8v and 16v that I had.

The 16v engine is a development of the older engine so there is a fair bit of commonality.

There are some interesting features on the 16v, like the fact that the fuel pump only runs when the engine is turning (crank angle sensor needs to tell the ECU to turn on the fuel pump) Need to make sure the wiring is done correctly or it won't run - found that out... :-)

Cheers
David

[alfettaGTAm]

Quote:

Originally Posted by veloce sprint pretty much smack on i recon Dave , suppose we could mention not to just machine off the air con groove in the front pulley as the thing will come apart shortly after , like a stage of the targa or some other most inconvenient time ... ay Chris..

[dave33]

I found a nice tame engineering firm on the North Shore in Auckland.
If you took the original to a good engineer it's doable.
The original is terribly heavy too !
The originals have a layer of rubber between the inner and outer steel parts of the pulley. Not great if it comes apart !

[KACK]

BTW, does anyone know the size of the nut that secures the harmonic balancer?