Entertaining the Pedro intake mod...

[thstone]

Originally Posted by Starter986

That under-drive pulley I've looked at... but read somewhere that there's a small piece that has to be ground down in order for that pulley to fit. Is that correct? I've the pulley on my Pelican wishlist... but have held of purchasing it until I know it'll just bolt on... no extra shimming.

Yes, a portion of the boss on the engine case needs to be ground down a bit in order to install the under drive pulley. Full removal of the boss isn't recommended as the boss might need to be used at a later date to hold the engine at TDC for repairs.

The installation recommendation is to only remove enough of the boss to clear the UDP while still retaining enough of the boss for future use.

This thread has relevant information and discussion. Do a search on "under drive pulley" and you'll find that this subject has been well discussed.

http://986forum.com/forums/performance-technical-chat/23645-installed-raby-under-drive-pulley.html

[Starter986]

Originally Posted by thstone

Yes, a portion of the boss on the engine case needs to be ground down a bit in order to install the under drive pulley. Full removal of the boss isn't recommended as the boss might need to be used at a later date to hold the engine at TDC for repairs.

The installation recommendation is to only remove enough of the boss to clear the UDP while still retaining enough of the boss for future use.

This thread has relevant information and discussion. Do a search on "under drive pulley" and you'll find that this subject has been well discussed.

http://986forum.com/forums/performance-technical-chat/23645-installed-raby-under-drive-pulley.html

Thank you. Read the material... the boss... makes sense.

Cheers.