Any updates or new info? It looked from your photos that the thrust surfaces on those bellevilles was pretty galled up, like they weren't getting any lubricant (which I imagine they aren't). Are there any burrs on the thrust faces on the outside of the element gears where the tripod tulips spline in...

I have one of the earlier ones (like an '81) on my modded car cooling the water heading into the turbo, and it has banjo bolt fittings, like an M10 or M12? I think the '85 oil cooler is same setup though, banjo fittings.

Best,
Drew

The guys at scanwest said it was the only thing they could do to keep the engine oil from pegging above 300*f due to the common sump wall. :-O :-O :-O :-O The hottest recorded I had seen was when Gary Moore put up numbers on Saabnet like 5 years ago, and I think he was seeing 260F-270F, gonna have ...

From Jeff Cunningham's TwinSaabs site:


Primary Gear # , Input teeth , Output teeth , Ratio
4 31 30 .97
5 30 27 .90
6 31 26 .84
7 32 25 .78
8 33 24 .72



Best,
Drew

Drew, At this point I feel that to properly support higher power and torque outputs that the Saab 900 gearbox should use spur gears and not helical gears. This might very well prevent having to cast or machine a new case. I'm looking into the possibility of making involute spur gears with a hob on ...

Thanks Andy, I have nowhere to put it here either (or to get it here for that matter).

I may try to give him a call this week, just to chat. It'd be a shame to have to have him dismantle it.

Best,
Drew

On the later boxes (and I think on my '73 box I just took out) the level check is on the cover, on the passenger side of the transmission. There are two covers bolted on, the rear one is to access reverse and the shift rod fingers and selector, and the front one looks into the secondary reduction wi...

I agree with what he says on page 21, and most of what he says on page 20, but the way I learned it, a properly profiled helical cut gear will not have the faces sliding across each other any more than a properly profiled spur cut gear. That's the whole point behind the involute profiling geometry I...

So did anyone buy this yet, or is Stephen still trying to thin the herd?

Best,
Drew

Sorry, must have got myself mixed up in what you were saying. Has anyone broken the output shafts, or do the teeth always let go first? Because there are probably things that could be done to those too. There is actually a materials lab on campus that can do an alloy decomposition on a sample to get...

Do you know what investment casting wax costs? If it's anything like the machineable waxes or foams for making machineable cores for composites layups it won't be cheap! The ability to gather all the chips back up and re-use it is definitely attractive though, but I have no idea what it costs. Is it...

The weight is a bit of an issue I had in the back of my mind since the trans is so far forward, but when I had my last one apart I didn't weigh it but the primary case with everything removed I think only weighs about 15lbs, it's actually not that heavy. Definitely not more than 25lbs, so you might ...

I remember when this idea came up on the Link forum like last summer? I'm glad to see you're still persuing the project, it will be interesting to follow, and I give you credit, the factory castings are extremely complicated and duplicating something suitable will be no easy feat to get the amount o...

I ask because there might be ways to re-orient the balljoint / outer bearing assembly to get rid of the bending load going into the balljoints. Most larger race sedans and formula cars have their outer balljoints oriented with the bolt axis horizontal where it has to support the suspension loading t...

The machinist I spoke with used to do some work with Reliance Gear Corp. here outside Chicago, in Addison, IL. He's still friends with the owner of the outfit, and suggested speaking with them as well, they supposedly do excellent work. The manufacturing scene around Chicago is definitely not what i...