Throttle boy recommendations

[chicane]

1988 635csi -
I performed a smoke test on my M30 and noticed a distinct vacuum leak from the spindles of the throttle body.
Clearly the spindle bores are worn and need to be re-sleeved.

I couldn't find any rebuild kits for our throttle bodies and the only rebuilt throttle bodies are the big bore TB's.
I don't want to buy a used TB as I will just be in the same boat.

Any recommendations?

[635sharknose]

Not able to help you with this, I'm sorry.

I am however interested in the smoke test you did, what equipment did you use?
Was thinking of making a DIY smoke tester to do the test you performed.
Found this clever video about making a simple and functional smoke tester.
https://www.youtube.com/watch?v=EhNQiIRsCCk

[chicane]

Smoke tester

https://www.amazon.com/gp/product/B06XH ... UTF8&psc=1

https://www.amazon.com/gp/product/B07R2 ... UTF8&psc=1

[86_6series]

Just need to hook up hoses and your favorite smoke flavor.

https://www.amazon.com/VIVO-Stainless-B ... 0199&psc=1

[635sharknose]

Smoke tester

https://www.amazon.com/gp/product/B06XH ... UTF8&psc=1

https://www.amazon.com/gp/product/B07R2 ... UTF8&psc=1

Looks good and not expensive! But sadly not available in Europe.

[635sharknose]

Just need to hook up hoses and your favorite smoke flavor.

https://www.amazon.com/VIVO-Stainless-B ... 0199&psc=1

Not expecting to have bees in my engine
Good tip Bob, very creative!

[635sharknose]

About your leakage, this video shows a repair of the bearings in a throttle valve of a E30.
Quite a job but not impossible.
https://www.youtube.com/watch?v=GMs6nrRTnuA

[chicane]

Great video brah, exactly what I needed.