I have just bought some 15" Borbet alloy wheels to replace the steel wheels on a 1990 75 TwinSpark. The Borbet alloys were originally fitted to a 2003 147, so I am wondering about the centre-bore measurement, is it 58mm or 58.1mm on the 147?
I have found conflicting information about the centre bore measurements for 147s and need to know how much to have taken off the alloys to fit the 58.5mm centre bore measurement of my 75.
Am I also correct in thinking that the correct offset for the alloys on a 147 is 30mm????
I just fitted some wheels off a later Alfa (not sure what) to my 75 so let's see if I can help.
The offset may be cast on the inside of the wheel somewhere.
I bored mine out myself using a sanding thingy I bought at an industrial bolt shop for A$5.00 (see pic) mounted on a battery drill. It's 60mm diameter but squeezes in the bore and is then self centering.
I cut a piece of tin which just fitted in the bore of the old wheels and used it as a guage to check the new wheels with, the final check being the fit on the car (check front and rear).
It only took a couple of minutes per wheel and gave a perfect fit.
As the 'thingy' wears with use, buying two 60 grit 'thingys' would have been better.
Hey i was looking at those wheels too! The ones on trademe right? Some new tyres would be good too, the M+S ones on them probably arent the best for auckland conditions...
I have just bought some 15" Borbet alloy wheels to replace the steel wheels on a 1990 75 TwinSpark. The Borbet alloys were originally fitted to a 2003 147, so I am wondering about the centre-bore measurement, is it 58mm or 58.1mm on the 147?
I have found conflicting information about the centre bore measurements for 147s and need to know how much to have taken off the alloys to fit the 58.5mm centre bore measurement of my 75.
Am I also correct in thinking that the correct offset for the alloys on a 147 is 30mm????
depending on wheel manufacturer, i have read centrebore spec of 58mm, 58.1mm and one even quote 58.06mm. from BBS catalogue, they state 58mm for FIAT and 58.5mm for ALFA ROMEO, so 147 falls under FIAT range.
the offset of original 147 wheels is around 40-41mm depending on wheel design. 75 runs standard 30mm offset.
Thanks for that. I bought them home and they have a plasticy/hard rubber spacer inside the centre bore of the ally taking it down from 90mm to 58.1 so luckily it's a great deal easier taking 0.4mm off the plastic spacer than alloy.
Thanks for your reply, you have an interesting "past" with front-wheel Alfas, what made you switch to rear-wheel drive and the 75?...I probably know the answer already but just curious
I had a 1989 3L V6 manual 164 not long ago. It was a lovely car but the torque-steer on bumpy/unevern surfaces or the wet eventually got to much for me and it was back to rear-wheel drive. They are supposed to have solved the torque steer problems in later models, i.e. QVs and Supers by dropping the engine 40mm, but I'd guess the issue would still be there.
Since we have a critical mass of Kiwi's here, sorry if I steal this topic!
Is there a local Alfa chatboard or mailing list? Compared to the Japanese brands I have been involved with there is not a great web presense for Alfa's in NZ. AROCNZ seems to provide little.
Very good. It's had two runs now and done 80km. Did first oil change on weekend and filled it with antifreeze. PLans are to finish painting my spare camshaft cover and retorque the head. Will also install the new towbar and get the exhaust welded where I had to cut through it.
I used a router bit with a roller bearing similar to the one pictured. They are a common item at most tool retailers. I purchased a kit with different shaped bits and different sized bearings. You can adjust the shape, diameter and depth of the cut. Be sure to get carbide bits. They cut thru soft aluminum very easily. I have used the same bits on various hard woods that were much harder to cut than the aluminum.
Very good. It's had two runs now and done 80km. Did first oil change on weekend and filled it with antifreeze. PLans are to finish painting my spare camshaft cover and retorque the head. Will also install the new towbar and get the exhaust welded where I had to cut through it.
Hey Fellas, seeing as there are a few of you kiwi's on here and there are no lokal forums or boards for you, why dont you ask if they will place a NZ forum on the general forums section for you.
It would make things easyer for you.
Thanks for that. I bought them home and they have a plasticy/hard rubber spacer inside the centre bore of the ally taking it down from 90mm to 58.1 so luckily it's a great deal easier taking 0.4mm off the plastic spacer than alloy.
Thanks for your reply, you have an interesting "past" with front-wheel Alfas, what made you switch to rear-wheel drive and the 75?...I probably know the answer already but just curious
I had a 1989 3L V6 manual 164 not long ago. It was a lovely car but the torque-steer on bumpy/unevern surfaces or the wet eventually got to much for me and it was back to rear-wheel drive. They are supposed to have solved the torque steer problems in later models, i.e. QVs and Supers by dropping the engine 40mm, but I'd guess the issue would still be there.
switched to the 75 cuz thats the way a real alfa romeo should be, rwd, better balanced and handling compared to the newer ones. rwd, 50/50, lsd, 4 doors, sit 5, nice boot, enough power, no electronic driver aids, just a wonderful 'basic' rwd car, whats not to love about the 75?!
the newer cars have much better NVH, are very easy to drive, pretty no brainer drive. although they are all good cars (all alfa are good cars!) but if i ever want to learn how to drive a real car properly, rwd is the way to go. with the 75 i dont have to drive fast to enjoy, i hear the engine, i feel the road, i smell the exhaust ........
for a similar kind of car, similar year, BMW is boring, porsche not practical, mercedes is for old man, japanese car no soul.
of the fwd alfas, i can never forget the 33 boxer experience and dont mind owning one again, but not the 146 and 156 .....
" with the 75 i dont have to drive fast to enjoy, i hear the engine, i feel the road, i smell the exhaust ........"
Totally agree, here in NZ we are bombarded with a forceful government anti-speed campaign blaming most of the world's woes on excessive speed... so having a car that's fun to drive slowly/moderately is essential.
RWD/FWD, apart from the 164 all my other Alfas have been RWD but I am seriously thinking of getting an SUd Sprint around Xmas time if I can find a good later model version.
Regards, Aaron
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