Ported 1.6 Head
10 Attachment(s)
I've got a ported and polished 1.6 head up for sale. I have the valvetrain parts minus intake cam and it's unassembled right now so you're pretty much paying for the port work but I can send the head off for a valvejob and assembly if the buyer pays for the work. Asking 250+ shipping or can do $200 shipped if buyer sends a core in return
Intake Attachment 190979 Attachment 190980 Attachment 190981 Attachment 190982 Attachment 190983 Exhaust Attachment 190984 Attachment 190985 Attachment 190986 Attachment 190987 Attachment 190988 |
Who did the work on the head? Is there any bench test info showing what gains were made in flow?
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Those ports are far from finished. Nice chop job on the valve guides.
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I did the work on it and haven't had it flowed yet. If I still had a miata and I would have it flowed when the valvejob and all was done but I just sold mine
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Originally Posted by johnmatt
(Post 689824)
I did the work on it
Why are you selling? |
Because I sold my car 2 weeks ago and don't haven't anything to put it on anymore
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That head needs a lot of work with paper scrolls before it is considered finished. You should have taped the mounting surfaces before porting. The mounting surfaces will have to be resurfaced in a big way.
It also looks like you removed alot of material from the floor of the port. Did you? |
From what I've read taking material from the floor is a bad thing. It'll lower the intake speeds.
What experience do you have porting heads? I know you sold that built engine a bit ago, did you port that head with before and after results either flow benched or dyno'd? How much for the valve job at your shop? Could that be done for 1mm+ over sized int/exh with the valves properly backcut, bowled, and no leaks? Could they also look at the head and see if it's even useable? How much extra would they charge to smooth and polish it up? |
Originally Posted by 1vicissitude
(Post 690256)
From what I've read taking material from the floor is a bad thing. It'll lower the intake speeds.
What experience do you have porting heads? I know you sold that built engine a bit ago, did you port that head with before and after results either flow benched or dyno'd? How much for the valve job at your shop? Could that be done for 1mm+ over sized int/exh with the valves properly backcut, bowled, and no leaks? Could they also look at the head and see if it's even useable? How much extra would they charge to smooth and polish it up? |
Originally Posted by Hot_Wheels
(Post 690508)
i bought the head off that motor, i dont think John was able to get the motor running, the head i got from john looks great! but im not a machinist, i might drop off at a head shop to check out the work and make sure all the ports are flowing the same
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im sorry but doesn't the exhaust side have to be close to mirror finish? It also looks like it needs new valve guides imo... good luck with sale.
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Originally Posted by 1vicissitude
(Post 690256)
From what I've read taking material from the floor is a bad thing. It'll lower the intake speeds.
What experience do you have porting heads? I know you sold that built engine a bit ago, did you port that head with before and after results either flow benched or dyno'd? How much for the valve job at your shop? Could that be done for 1mm+ over sized int/exh with the valves properly backcut, bowled, and no leaks? Could they also look at the head and see if it's even useable? How much extra would they charge to smooth and polish it up? Only experience I have is this head and my first one so I'm no pro and can go back over it to finish smoothing everything over and polish up the exhaust side. As far as the bottom hurting flow I'm not sure and didn't get before and after numbers on the first head either. The machine shop has a CNC machine and a flowbench to check everything out. Thinking back from memory when I sent my first head in it was around $340 I believe for the machine work for larger valves, valve job, new valve seals, and to get everything checked and installed. Sorry if I missed any questions just ask them again. |
You never remove large amounts of material from the floor of the port, just enough to remove the casting flash. All material should be removed from the sides and top. That is why a 99 head is so much better than a 94-97 head. The runner has been raised to straighten the path of the intake charge.
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Thanks for the tip
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Originally Posted by Hot_Wheels
(Post 690508)
i bought the head off that motor, i dont think John was able to get the motor running, the head i got from john looks great! but im not a machinist, i might drop off at a head shop to check out the work and make sure all the ports are flowing the same
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