Throttle Plate Replacement

[razor66]

I am planning to change out the throttle plates in my Holley 750 HP as my current ones have holes drilled in them and I don't think that I need them as I found that the t-slots are only exposed about 0.015" to 0.016" at idle. My question is if thread locker like perhaps the blue loctite should be used on the screws that attach the throttle plates to the shaft?

[Pro Stock]

I am planning to change out the throttle plates in my Holley 750 HP as my current ones have holes drilled in them and I don't think that I need them as I found that the t-slots are only exposed about 0.015" to 0.016" at idle. My question is if thread locker like perhaps the blue loctite should be used on the screws that attach the throttle plates to the shaft?

Blue loctite will work fine, you can also solder the holes closed on the original plates and avoid all of the alignment problems associated with installing new plates. If you do go with new plates make sure that you use new screws also.

Dale

[razor66]

Blue loctite will work fine, you can also solder the holes closed on the original plates and avoid all of the alignment problems associated with installing new plates. If you do go with new plates make sure that you use new screws also.

Dale

Thanks for the response. I don't think I would trust my soldering job enough that I wouldn't always be worried about the chance of it coming loose and ending up in the engine. I have heard that it is a common thing to do and probably wouldn't be an issue so I might decide to try it. Can you provide any advice on the best way to install the new plates if I end up going that route? I haven't done it before and was thinking it would be just a simple matter of unscrewing the old ones one at a time and installing the new ones - thought I would do it with the curb idle screws backed all the way off. Sounds like there is more to it than that so I would welcome any input to help ensure I get it right. Thanks again.

[Pro Stock]

You can do the throttle blades one at a time or or remove them all and replace one at a time, whatever you are more comfortable with.

First remove one or all of the butterflies, install the new butterfly with blue Loctite, barely snug one of the screws , hold the base plate up to a light source and light check for a good fit of the blade to the bore and adjust as neccessary to get the least amount of "light leakage", tighten the screws, re-check against the light and do the same thing on the other three. This isn't rocket science so don't let anybody scare you away from doing it, if you have any problems let me know by pm.

Good luck!............Dale