I took my spare tb to a machine shop to get a quote on having it bored. I wanted it bored to ~60mm and the owner said that he could do the bore but I would need to get someone else to produce the butterfly plate. Is this guy just not any good, or is this normal? He also wanted $120 to do the machining, which seems kinda high to me.
Trottle body!? LOL! I think it resides on a horse somewhere. My bad.
The mechanic is correct. The butterfly is located near the horses penis. On a serious note, when they bore the tb, that enlarges the diameter, causing the stock butterfly to be smaller. Yes, you need a larger butterfly. I myself would just buy one that is bigger, making hassles less.
spend the money and get a bored one from someone i did and mine was brand new and works great fits great and it was only 217 shipped by a guy named -riva22 off ebay. i got it in three days.
find a butterfly plate off another tb..... Then put it on. not hard.
I would rather not buy a new one, since i have a perfectly good one now. There are people that have had machine shops do this including the butterfly. Now would the butterfly off a ls1 tb work if it was machined down? The real question is how did people get around the butterfly issues w/out buying a new unit prefabbed?
all the butterfly plate is is a piece of aluminum or brass machined to the same (hair smaller) size as the bore of the throttle body. Maybe he just doenst have the machinery to make the butterfly plate.....
SPD RCR Z -
'02 Z24 420whp
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'78 Buick Opel Isuzu W41 Swap
