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Alfa 33 1.7 16V Turbo

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102K views 63 replies 25 participants last post by  jol  
#1 ·
Hello there,

I'm building my alfa romeo 33 87 year. I have restored all the body and even converted it to 4x4. Now the time for my engine .I've already bought 1.7 16v engine and have a thought to build a turbo engine. Maybe some of you allready build it and have some fotos and advices? Every thoughts are welcome. (Links too :) )
 
#33 ·
That photo I found in internet, never met the guy really.

I have read one posting here to advised about to change for SUBARU engine.

Does anyone ever have the information to do that into 146?

As 146 is front wheel drive, yet SUBARU is 4x4, How to lock the rear drive? What will be the mounting will be.

Here in Malaysia, a lot of JAP car engine conversion, BMW with Nissan Skyline engine, or TOYOTA SUPRA and so on.

Of course, It does killed the feeling of driving the true BMW or else.

To maintain the BOXER 1.7 is a bit troublesome in MALAYSIA, the true expert to do the maintenance and upgrading here is very busy where it takes you several month to swap the engine due to the demand.

Where other mechanics is just a "clown" when it comes to the itallian engine.

So the option left is only to swap the engine into JAP engine.

The question is, is there anybody in this world have changed the boxer into SR20 or SUBARU? Does anoyne have the info, photo or whatsoever? please notified me.
 
#35 ·
Hi Spooty,

As i Just mentioned, I get the photo through one link, Cardomain. http://www.cardomain.com/ride/617055/10

I still try to locate the owner just wanted to see the real thing. I know that only 2 guys did this turbo on the boxer.

You may browse to the link to read more.

Anyway, the subaru in alfa is interesting. Reliablity of 5 bearings and so on. But the true feelings of Alfa will be not there.

I know it could be done, but still want to have some info about it. I ever read and watched the video of VW Bug with ALFA engine, VW Bug with rotary. VW bug with Toyota engine. The rotation of rear engine and front engine is reverse if i am not mistaken, yet that guy could manage to put ALFA boxer front engine into VW rear engine bay.

Really hopes that anyone with the information about subaru in ALFA or any JAP engine in ALFA could share with us.
 
#36 ·
Rotation can be reversed by changing the orientation of the differential. Not always possible in most gearboxes, but I'm pretty sure this could be done on the 'sud/33 transaxle, however a new bottom plate would need to be manufactured.

"Reliability of 5 bearings" is rubbish if the engine is maintained with regular oil changes with a quality oil. Replacing an Alfa boxer engine with a WRX motor is a waste of money - you might as well buy a WRX. The 33's boxer is what gives the car its unique character to begin with. A 33 16v only needs a moderate increase in power from standard, spend the rest on handling, wheels, brakes etc and you will out perform a lot of modern cars - just ask Flyboxer!

~Benjamin
 
#39 ·
**** straight boy, there is no point putting something in that its not designed for. The alfas dont need sheit loads of power cause they handle bulk good, and if you spend as much attention to the handling and braking as i have you won't really be beaten. Its not all about power:D
 
#40 ·
A 16v turbo would be good. A non-cat 16v 33 puts out 138 bhp in standard format. It wouldn't take much boost to turn what is a fast car (0-60 in just over 8 secs), in to a very fast car.

Using moderate boost could be practicable at a reasonable cost. This is a rough guess here but I would have thought you could get away with a very well rebuilt stock 16v engine (new valve guides, conrod bolts, flywheel bolts etc), having machined the pistons slightly to lower the compression and be good for 10-12 psi.

10-12 psi would give you between 180-200 bhp with a good level of torque. The torque and accelaration from an engine like this in a 33 would feel like you've just dumped a 24 valve V6 from a 164 under the bonnet/hood :D (we say mum you guys say mom).

The 16v 33 only weighs 1000kg. Just imagine this setup in a series 1 sud which weighs 810kg.
 
#41 ·
Only 810 Kg

My Series 1 Sud Ti, which has a 16v motor, weighs 938Kg with half a tank of gas.

It does have a roll cage, but that's about the only substantial weight addition. It has no bumpers, and very much lighter headlights and indicators etc. It has much lighter than standard wheels. It has no heater or associated plumbing.

They must have weighed the original Sud Ti protoype before they finished it...:D

Chris
 
#45 ·
I've often wondered that. It may be that it's just a dry weight, with no spare or tools.

If you take the 938Kg that my car weighed and subtract 50Kg for the cage, 20Kg for the difference between a 16v motor and a 1200 (my 16v has light bits on it...), 20Kg for the half tank of gas, 5Kg for engine oil, 4Kg for gearbox oil, 1 Kg for brake fluid, and 7 Kg for coolant, you get 831 Kg. Take off (say) 12Kg for the spare wheel etc, and another 1 Kg for the tools and the answer is 818Kg.

For a car that won't go anywhere.

Interesting, innit?:confused:
 
#46 ·
I think you're on to it there in terms of the dry weight thing - no liquids (even the vital ones) or other "incedentals" makes for an unusually light car. Back in the day, car manufacturers tended towards under- or over-exaggeration, depending on what looked best, though I'm sure that's not the case now-a-days...

And things are often heavier than you think. My 164 weighed 2140kg when on a weighbridge the other day. Now it was towing a trailer full of rusty and broken sud parts, but that was still quite chunky.
 
#50 ·
Is the manifold from a carb?
Does the alternator still fit? (tipped over to the cars left).
Did you make the crankpulley yourself?

Here's my solution, using a 164 ts servo pulley (outside the original) and a m45 from a Merc
 

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#51 ·
I have an SC14 supercharger and 8v injection gear including inlet manifold if anyone is interested in the stuff; I don't think i'll be using it after all. $400 plus postage.
 
#53 ·
Sud#1, that manifold is very impressive. It doesn't look like you will be able to use an intercooler so I would probably add water injection. It looks like you are set up for about 11psi, but I am not sure because I am guessing at the pulley ratios and engine displacement.

jol, I like your setup to. I am partial to the remote mount systems because they are easy to intercool. It looks like you plan to have some serious boost, but I can't see how you are going to get it too the throttle. Obviously you have a plan for that!

Greg Gordon,
hiperformancestore.com
 
#55 ·
jol, I like your setup to. I am partial to the remote mount systems because they are easy to intercool. It looks like you plan to have some serious boost, but I can't see how you are going to get it too the throttle. Obviously you have a plan for that!

Greg Gordon,
hiperformancestore.com
Hey it was your verde's that started it :D The intake is flipped in the picture, I'll fab some tubes pointing straight forward and into an air/air intercooler (moving down the radiator to make it clear). Or making an air/water setup where the AFM originally sits (using megasquirt). Check the position here:
Alfapower - Galleri :: Motorbyte hit och dit :: DSC00981

jol, that remote supercharger mount set up is very creative! Having to refabricate the whole intake manifold is probably the number one reason why many have failed at supercharging the Alfa boxer engine. Will you be installing a tensioner of some sort?

~Benjamin
Just above the camgear is another spacer to mount another cambelt tensioner, just as the original one in the picture.
 
#54 ·
jol, that remote supercharger mount set up is very creative! Having to refabricate the whole intake manifold is probably the number one reason why many have failed at supercharging the Alfa boxer engine. Will you be installing a tensioner of some sort?

~Benjamin