MG Sports Cars

Thanks Doug! I’ve been asked about using it with aluminum heads and I posted what I knew earlier in this thread. My friend and old boss said the guy with the Model A, who I never met, has moved to Florida. I’m trying to get his email address. I don’t think there is a problem with aluminum heads. I’ll let you guys know if I learn something. I’ve never given it much thought because for me the weight difference isn’t enough of a factor and I don't know if it would be strong enough, but an intriguing idea, if you have the ability to do the welding would be a set of aluminum mounts; all polished up they might look good! Of course you could chrome or powder coat them, I just painted mine.



Paul



Edited 2 time(s). Last edit at 01/03/2013 08:00AM by pspeaks.

Stainless is a much better idea. Aluminum has a finite stress cycle lifespan so to avoid fracture the mounts would have to be excessively thick and/or heavily gusseted. Stainless OTOH can be thinner than mild steel.

I used stainless on my roadster (340 thread) and we used 1/4" mild steel plate on the BBB in the Roadmaster which was a little heavier than needed. As long as there is adequate length of thread engagement in the accessory bosses and the mounts are well designed there will be no failure. Just avoid stress risers and overstressing the metal. The stainless in the 340 mounts was around 10 ga. with the cushion pads doubled. I don't think I'd go much thinner than that. With aluminum I'd not be happy with anything under 3/8" unless it was extremely well designed and even then the area around the pads would have to be large to spread out the load and it would need side gussets. There probably isn't room for all that. Titanium maybe?

The 455 with aluminum heads and intake is about equal in weight to the 340 with aluminum 300 heads, intercooler intake and Eaton M-112 blower and accessories. Power output will be similar.

Jim

Thanks for the insight Paul and Jim. I like the idea of head & frame rail engine mounts as it will lessen the pain of routing the steering shaft and may ease some of the issues with the headers.

Speaking of headers, well I'll get to that subject later on!!

You both had great food for thought!!

Doug

Doug we have engine mounts for the SBF V8 and they are adjustable for location and height, it comes complete with stainless motor mounts, bolts, powder coated brackets and includes cross member.

Doug, my mounts are steel but I agree with Jim, stainless might be the better choice. For headers I got mine from Ted Lathrop and I’m extremely happy with them. When you get ready I would give him a call.


Paul

Bill
Do the motor mounts come with your X-member kit?