Quote:
Originally Posted by RHD ZL1
I had a similar issue with Soler’s adaptor plate, I ended up having the LT5’s throttle body’s holes elongated to be able to bolt onto the LT4 s/charger without the adaptor plate therefor not being indexed off center and causing my rubbing issue. As my s/charger is not ported I had a heat rejecting glass filled nylon plate made that has the outer profile of the LT5 throttle body (black part in pic mounted between the T/B and blower) and the internal is machined with a tapper from 95mm (LT5 T/B size) to 87mm (stock LT4 s/chargers mouth opening size) to allow the butterfly to open without fouling on the LT4’s non ported 87mm opening. The plate is only 5mm (approx 0.200") thick. As the T/B is now no longer indexed off center due to the supplied Soler adaptor plate there are no issues with belt rubbing. Another bonus is that the T/B is very noticeably cooler to touch vs the blower as the heat from the blower isn’t transferred into the T/B as it would be with direct alloy on alloy contact.
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That composite spacer/insulator makes very good sense. Aluminum is an incredible heat transfer substrate, and thank you Australia for millenniums of above 100°F temps to forcibly create the knowledge to help solve engine performance/detonation problems in ambient high heat situation.