Project car - 1989 75 3.0 V6 [Updated 12 November 2021]

[shiny_car]

Cheers mate.

Ah, you're referring to the coolant temperature to ignition sensor. Just refreshed my memory by re-reading Greg Gordan's article. It's a fourth sensor that isn't fitted to 'our' cars (I don't know if any later-model 75's in Australia have them; probably fitted to some GTV6's?). Not to be confused with the thermotime switch, coolant temp to ECU sensor, and coolant temp to dash gauge sensor. The hole for ignition sensor is blanked off, so the car is new enough to have avoided having one fitted in the past.

[gergory]

as usual a  comprehensive response.............you are becoming a very valuable asset for all us 75 owners...
as you read this I will be on my way in my 75 to auto italia in canberra
rgds greg

[gergory]

richard how did you take out the camshaft seals?

rgds greg

[shiny_car]

Hey Greg

They are pretty much a press-fit. But mine had some silicone used to seal around the outer edge; still easy to remove. From memory, I tapped them out from the inside, but that was easy for me with the camshafts removed.

If the camshafts are not going to be removed, then there's probably not enough access to tap them out from the inside. So you'll need to get creative  . Some sort of 'hook' would be good; maybe bend the end of some coathanger wire. But whatever you use, if it's metal, be careful not to scratch the metal.

Good luck.

[gergory]

thanks guys............got back from canberra and noticed an oil leak around the camshaft sprocket.

[shiny_car]

Yeah, a proper puller would be ideal (?brass hook). I had a quick look for these at the time, but didn't need them in the end. I found my seals easy to remove, so I don't think you'll need to work at it very hard.

Bit of a nuisance for you: cambelt-off job and all that. If you need to borrow the cam pulley tools, you know I've got 'em; just that I'm not around the corner from you! 

[gergory]

richard
I actually ordered them about 4days ago
thanks anyway....................appreciate the offer

rgds

[johnnyc]

hi shiny, what size/ manufacturer rubber are you running on your 75? how do you find them? good or bad in the wet?

i need to replace the rears on my car and am looking at a variety of tyres. may consider the bridgestone adrenalin Potenza re001, or something in Michelin or Pirelli. I really want to go and eyeball them first before I make a decision.

regards, john.

[shiny_car]

Hey John

My car's far from complete, so it's only on the rubber fitted by the PO to meet RWC requirements (no-name tyres). But it will eventually run 225/35R18, and probably Continental ContiSportContact3, depending on availability.

I have used RE001 Adrenalin on my 155, in 205/40R17, and rated them highly. Have since fitted Continental DW Extreme 215/40R17, and also rate these very highly, they they seem to be a little softer and wearing a little faster.

[Duk]

But it will eventually run 225/35R18, and probably Continental ContiSportContact3, depending on availability.

That is a big wheel and tyre for the 75!

Of course it will depend on the offset of the rims.
I've dummy assembled my Mazda RX7 mags with 225/50/16 tyre onto the adapter hubs I had made and that effectively gives the rims a +30 offset (+50 standard). With the 225/50, there is no way the front tyres clear the front edge of the side skirt with any more than about 1/4 turn on the steering wheel.

According to http://www.miata.net/garage/tirecalc.html a 225/50/16 has a diameter of 631.4mm but the tape measure says more like 615mm.
The 205/40/17 I also have are said to be 595mm but measure 585.
The calculator says 614.7mm for 225/35R18.

Either way, the 225/50/16 I have measure 50mm larger in diameter than the standard spare wheel.

So if you have a tyre with a diameter more than, at a guess and it could be less, 600mm on a +30 offset, they won't fit in the front.
With less offset you may be able to use slightly larger diameter tyres.

[shiny_car]

Yes, will be a tight fit on the front. I'm a long way from being at the stage of fitting wheels/tyres, so not an issue for quite a while! But from all my research, it should be able to fit, but may need slight trimming of the rear of the wheel arch liner and the edge of the bumper.

Wheels will be 18x8 +35mm.

[VeeSix]

Wow! I can not wait to see them fitted! The 75 will look fantastic once you sort them out, do you have the wheels yet? If so any photos? 

[shiny_car]

I do have the wheels, but haven't taken any proper photos. I had to import them from Germany, secondhand - couldn't find any locally. They are OZ Racing Superleggera, which are a superceded wheel, hence hard to find. They will be cleaned up and resprayed. Same as these wheels; pics of this car were my inspiration:

[johnnyc]

they are very nice. i have the original alloy wheel on mine, hence running cheese cutters, 195/55/r15.

for the moment I will keep the original wheels but looking to upgrade to something slightly bigger, perhaps 205, assuming that tyre would fit. i also need to look at improving the original brake package. current brakes leave a bit to be desired.

your car is coming along nicely.

cheers

[VeeSix]

Fantastic, can not wait to see you fit yours especially in your mentioned wheel and tyre sizes!