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Well, here is my first housing. Just wanted to run it by you guys before I start on the next housing.
I polished the sleeve and ran the bottom of the exhaust port to the bottom of the sleeve. The one thing I think I need to do is open the port more outwards to match the sleeve. This is in my 91 TII. Thanks! Attachment 21702 https://img.photobucket.com/albums/v...xhaustport.jpg James |
Looks like you did a really good job. Is this your first one? BTW, where on the Mexican border are you from?
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Looks very nice, try running an old apex seal across the port to make sure nothing is sticking up that will catch on them after you have the motor together
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not a bad shape, but try giving the edges a bit of a radius.
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Thanks guys...
It is my first time porting...on new housings...some of the most tedious stuff I have done on this car. I will radius the edges more. The reason I am building an engine is partly due to the fact the last engine builder didnt think re - chamfering the exhaust port was a good idea. DO NOT want to have same thing happen twice. My apex seal actually broke lengthwise . James |
if you do a search, i'm sure you'll find threads on the importance of the radius on the exhaust port.
try exhaust port, chamfer, radius, bevel, etc... you'll probably turn up what you need to know. |
Also try 2mm 45° (or 45 degree) bevel.
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I can see I need a little more chamfer on the sides of the port. Is that what you guys are talking about?
I read Itos exhaust porting write up...good stuff! However, I really can't do much with the bottom of the port. It is a very smooth transision to the housing. |
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