- May 1, 2007
- 17
- 0
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Been along time since ive been on here. Im in need of some serious help. Its a long story but ill do my best to keep it simple. My 289 i built with world roush 200 heads, it had a performer 289 intake that did not have the flow the heads required. I purchased a RPM airgap intake and set out last weekend to make the swap.
I found a few years ago the pushrod holes in these heads contact the pushrods themselves and bend some of them. So i clearanced them by at most .100 just at the top inch or so to give the pushrods room. All went well, checked the holes and didnt see that i had gone into any ports of any kind. I installed the intake...etc. Fired it up and all the water went into the crank case. I cleaned it up and flushed it out several times. Replaced the gaskets and pressure tested it this time, it leaks bad. I can hear the air leaking into the valley area but when i pulled the intake back off it appears the intake is sealing as it should. Now im asking the question if one of the holes i clearanced has gone into the water jacket. I wouldnt think .100 taken off (spring side, bottom circumference) of the holes would get anywhere close to those jackets.
I havent found anyway to pressure test the block with the intake off either. I tryed a half ass trick of both my brother an i covering the water ports and trying to listen for a leak, but all it does is push our hands away. I know dumb idea but it was worth a shot.
I really need to know if the little amount i took off them could have gone into the water passage.
Any suggestions on how to test for this? ...i could machine some plates to mimic the intake but that wont happen for a few days, id like to get something figured out this weekend.
Thanks
I found a few years ago the pushrod holes in these heads contact the pushrods themselves and bend some of them. So i clearanced them by at most .100 just at the top inch or so to give the pushrods room. All went well, checked the holes and didnt see that i had gone into any ports of any kind. I installed the intake...etc. Fired it up and all the water went into the crank case. I cleaned it up and flushed it out several times. Replaced the gaskets and pressure tested it this time, it leaks bad. I can hear the air leaking into the valley area but when i pulled the intake back off it appears the intake is sealing as it should. Now im asking the question if one of the holes i clearanced has gone into the water jacket. I wouldnt think .100 taken off (spring side, bottom circumference) of the holes would get anywhere close to those jackets.
I havent found anyway to pressure test the block with the intake off either. I tryed a half ass trick of both my brother an i covering the water ports and trying to listen for a leak, but all it does is push our hands away. I know dumb idea but it was worth a shot.
I really need to know if the little amount i took off them could have gone into the water passage.
Any suggestions on how to test for this? ...i could machine some plates to mimic the intake but that wont happen for a few days, id like to get something figured out this weekend.
Thanks