Does this need to be addressed?

[cruzmisl]

Hi All,
Just piling up all the parts for my build and I was looking at the throttle body/air filter assembly. I'm running a SE 58mm and an RSD air cleaner. The backing plate bolts right up but there is quite a ridge. The actual opening (where the blade is) appears to be the same although I haven't measured it. Does it matter or should I mill it so it doesn't have the ridge?
Thanks,
Joe

[speedfoos]

Unless you have a mill and some spare time, I wouldn't bother. Look at the ridge there that's your throttle bar.

[Rollmeaway]

They have left it that size for a reason so the flow of air is a direct shot to the combustion chambers. Picture a carb stack ... same principle.

[hardheaded]

seems to me you would'nt want that there,seems you would be resticting air flow somewhat.

[Mohead1]

I would blend it for sure

[DBChoppers]

Mill it down to fit correctly.

[Rendell]

I'm thinking you are restricting air and the air that is delivered is whatever air can get sucked in, and the crap that can get sucked in as well.

[No Cents]

I'm running the same set up. A SE 58mm t/body and a PM Gasser air cleaner...same as Rolands, or should I say Roland's is the same as daddys. My backing plate was the same as yours (designed for the factory 50mm t/body). Here is how I fixed mine for the 58mm t/body.
I bolted it on and broke a pencil into a 1" long piece so I could go inside the T/body throat and mark the inside diameter of the t/body onto the backing plate. I then removed the extra material from the backing plate. Ended up with a straight shot flow with the same size opening in the backing plate as the t/body mouth. I did mine in a vise (cardboard on each side of the backing plate so it doesnt get marred up)...I took a rounded rough rasp file to remove most of the excess material and then finished it smooth with a fine sand roll in a drill. It took me about an hour to do it. Turned out great.

No Cents

117" Darkhorse build...all smiles!!!

[cruzmisl]

Cents, is the backing plate polished stainless or is it plated?

My plan is to pimp my friend and have him do all the work on his mill. It's free and no effort on my part

[No Cents]

Mine is chrome plated aluminum. I was bored and had time to kill. I always try to gasket match adjoining parts.
Something I learned 35 years ago while working for an high performance engine builder.

No Cents