Yet another metric 200 question

[Henrys Toy]

Originally Posted by FED 387

Totally stock 350 is about 122 pounds whereas a totally stock 200C comes in about 96

Good morning to all,
The TH350 I weighted was without a converter or fluid and it was 115 lbs. my TH200 without a converter or fluid 98 lbs. , so if you error towards the high side 20 to 25 lbs. you will be slightly over weight when you put your car on the scale. I'm also sure there are variations between transmissions and scales so use these numbers as a guide, your outcome may vary.

Respectfully,
Henry Kunz 1534 H/SA

[mike britt]

So I put 20 pounds in it and went up for Q1 and was 10 pounds over at the scales. Glad I put the weight in because that run would not have counted.

[mike britt]

On Q1 the transmission shifted like an old cadillac. I clamped off the cooler lines for Q2 and it shifted firm but blew the front seal out at the finish line. The good news is the car picked up over 4 tenths and 3 mph from the turbo 350.

[Mark Yacavone]

Originally Posted by mike britt

On Q1 the transmission shifted like an old cadillac. I clamped off the cooler lines for Q2 and it shifted firm but blew the front seal out at the finish line. The good news is the car picked up over 4 tenths and 3 mph from the turbo 350.

Just to be clear here... You said the cooler lines were plugged but now you have a cooler?
The 4 tenths you picked up was with a different converter?

[mike britt]

No, the 4 tenths was after I clamped the cooler lines off. I did find out the builder was Billy Lynn. I hope I got the name right. Technically it was a different converter and transmission.

[Mark Yacavone]

Originally Posted by mike britt

No, the 4 tenths was after I clamped the cooler lines off. I did find out the builder was Billy Lynn. I hope I got the name right. Technically it was a different converter and transmission.

Okay...I'm Lost in the Ozone Again

Good luck...

[ss3011]

Clamping off the cooler lines changes the way the pressure regulator works, resulting in way higher line pressure, but also prevents lube and cooler flow. The result of that will be an over pressurized converter which could / will lead it to ballooning , plus no lube flow will burn up the clutches and bearings. This is obviously no good for the transmission . If you are having line pressure issues, hook up a line pressure gauge to help diagnose the problem .

[mike britt]

So I got the bushing out of the front pump and studied it. It has a lot of wear on one side and has never touched the converter on the other side. Looks like the ultra bell housing is not lined up and causing misalignment between the crankshaft and the transmission input shaft.

[ss3011]

The bushing in the pump needs to be centered on the crankshaft centerline. I built a tool that centers the bellhousing on the crankshaft bore and then allows the pump bushing to be centered on the tool. This allows the pump to be aligned and pinned to the bellhousing . With the transmission aligned with the crankshaft, bushing wear is reduced significantly and oil leakage is way reduced. You will need an engine block , a piece of aluminum round stock about 18" long and a good machinist with a lathe. You need to pickup at least two of the back main bearing bores and machine the round stock to fit line to line in those bores. The rest of the round stock projects out the back of the block, allows you to machine it so the pump bushing is a close slip fit. Once the alignment tool is made , you bolt it into the block, install the bellhousing, then slip on the pump body with the bushing installed. The pump body can now be drilled for two small pins 180 apart so the pump stays on center with the bellhousing. The problem with those aftermarket bellhousings is it counts on the bolts to align it with the pump, but the bolt holes are clearance holes and will allow the bellhousing to runout quite a bit. Once the bellhousing is aligned and pinned to the pump, it will run on center.

[jmantle]

Originally Posted by mike britt

So I got the bushing out of the front pump and studied it. It has a lot of wear on one side and has never touched the converter on the other side. Looks like the ultra bell housing is not lined up and causing misalignment between the crankshaft and the transmission input shaft.

What you're seeing on the bushing wear isn't necessarily an ultrabell problem. The discharge side of the pump forces the gear and converter neck to one side from the hydraulic pressure so wear on one side is normal.. That said, hanging the bell housing on 6 8mm bolts doesn't guarantee good alignment.