1989 245 b230 to D24t build

[ngoma]

Originally Posted by anders

...now I’m unsure if my leaking pump that I pulled is 180 off or not. I’m assuming it is as I usually keep the sprocket with the pump when I remove them from the engine.

I wonder if you can visually verify the pin/key slot mismatch when you have the cover off for the reseal? Might be too buried.

[v8volvo]

Originally Posted by anders

I had to share the sprocket, the correct one is on the right.
I’m pretty sure the one on the left was modified because someone had built a pump with the cam plate 180 off., now I’m unsure if my leaking pump that I pulled is 180 off or not. I’m assuming it is as I usually keep the sprocket with the pump when I remove them from the engine.
If you look closely you can see the factory notch has a chip in it and the 180 notch looks factory, but it’s actually cut deeper now that you compare a factory sprocket with it side by side. Crazy! I don’t know how many needless hours I spent tracking non-issues because of that sprocket!

Crazy. That is a nasty trick, and everybody would have fallen for it -- why would you ever have expected there to be a second notch, after the first pump timed up just fine using that non-factory notch??

Never going to get back the time that part stole from you, I'd be pretty mad at the thing.

However, if it makes it any better, thinking about it now, I bet whoever put that notch in that sprocket suffered for a long time too before they figured out they built the pump itself 180 off. There's a long chain of misery attached to that sprocket now, everyone will be better off when it is melted down for scrap.

[anders]

Originally Posted by v8volvo

However, if it makes it any better, thinking about it now, I bet whoever put that notch in that sprocket suffered for a long time too before they figured out they built the pump itself 180 off. There's a long chain of misery attached to that sprocket now, everyone will be better off when it is melted down for scrap.

Ha, I never even thought about how much time someone else spent and then finally just notching the sprocket 180*

Car is 99% done now though!

[anders]

I put 50 miles on it, all went well, yay! No leaks discovered, engine runs nice like it should, very quite too when using the D24 exhaust, it might be too restrictive though. Rear end gearing is low, I discovered that this car was originally an automatic ( ugly hole drilled in firewall for clutch cable) so it probably has 3.91 gears in it which I think are too low for the m46 OD of .82. But overall it drives decent and has decent power (it’s been awhile since I have driven a non modded out d24t).

[ngoma]

Didn't the factory M46 get 3:54 or 3:31 final drive ratio?

What kind of hose did you use for the VC breather?

[v8volvo]

The extra short M46 first gear must be even more pointless than usual with the 3.91 axle, it's barely useful even with the 3.54. Nice setup for towing though maybe.

I believe regular 240 M46 cars had a 3.31 rear axle and diesels with M46 had 3.54 (both for 200 and 700). Probably wouldn't be hard to swap a different axle in someday as the 3.31 ones I assume are plentiful.

Or the owner could keep the current axle ratio, raise the suspension, and put on a set of big AT tires -- then the short gearing might be a benefit!

Sharp looking engine bay, nice color choices.

[barkster1971]

An m90 gearbox is a massive improvement over the m46. I do miss the OD green light on the dash though!

[RedArrow]

Wire it up to the highest gear or the headlights

[anders]

Originally Posted by v8volvo

The extra short M46 first gear must be even more pointless than usual with the 3.91 axle, it's barely useful even with the 3.54. Nice setup for towing though maybe.

I believe regular 240 M46 cars had a 3.31 rear axle and diesels with M46 had 3.54 (both for 200 and 700). Probably wouldn't be hard to swap a different axle in someday as the 3.31 ones I assume are plentiful.

Or the owner could keep the current axle ratio, raise the suspension, and put on a set of big AT tires -- then the short gearing might be a benefit!

Sharp looking engine bay, nice color choices.

Well the rear end is 3.73, so not as terrible as a 3.91 gear set. So the owner and I came up with the decision to leave the current rear end in it and install larger tires.

I built some lift blocks from 2.5”x .250” square tube. Worked out well.

[v8volvo]

Nice, sounds like the right call. I ended up going the same way with my 745 which does have the 3.91 rear. It did help bring the revs and noise down (although with speedo error of course) at freeway speeds.

How does the car overall look now with the taller suspension and tires?