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Piglet's Rebuild Of His Busted Tomei 2.8


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  • 2 weeks later...

Bit of a copy paste job from the OS88 vs Holinger thread but I'll plonk it here also...

 

For those interested in an OS88, here is the oiling issue that needs to be rectified before you put it in the car. 

The little slot where the light is coming through is the breather for the box. There is no cover for it and the gear acts like a paddle wheel and pumps oil up the hole and through the hose. So a cover will be made to stop this.

The oil breather fitting also needs to be drilled and tapped. My fitting popped out once it got in the car. OS must use clag glue to secure the fitting... it doesn't last.

I am also changing the sensor that lives in the bell housing. 

i should have the box back by the end of the week ?

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  • 3 weeks later...

Finally, something worth updating about!

Gearbox is back in!

Fabrication of PS res is mostly done. The 2 x 4 port MAC valves are mounted.

Airbox, gate lines will hopefully be tomorrow.

Transfer case to front diff shaft uni joints are rooooooooooted. Thats away getting sorted ATM.

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24 minutes ago, iruvyouskyrine said:

Why 2x 4 port valves? Twin gates I guess?

A 4 port gives better control over a wider spread of pressure. You can get away with less spring in the gate incase you want to turn it down (wet track day etc). Scott wanted 2 valves and considering I didn't have a setup yet, that's what went on. One valve per gate.

Going off "Intune's" car, a combo of 1 bar springs gave a gate pressure of 19 psi or so (going off the tial spring sheet). I've put 0.9 bar springs in. See how we go.

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Airbox almost completed. A much larger filter is going in. A K&N RF-1041 which measures 6 inch flange, 7.5 inch base, 5 inch top and 7.5 inches long. Going through the airbox is a spun up 6 inch to 4 inch funnel. The factory airbox snorkel will be also used then off to get coated black!

With any luck, gate lines tomorrow.

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It is what it is, Pete.

Not using rubber around there, that's bloody lunacy! I'd much prefer not have a rubber line fail and a gate not open when hard up it. Braided -3 lines with heat shield. 

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