Porting my Head

17796 Views 161 Replies 11 Participants Last post by TRX2fiveO, Apr 19, 2010

TRX2fiveO

Discussion Starter · Nov 14, 2009

Ok guys I have an extra head for my quad actually everything but the crank to build another engine. I took the head to the shop today and bead blasted all the funk off it it looks like a new head now. I taped up the top and bottom faces so the beading wouldn't pit them.
I will be porting the head next week sometime, after I finish my homework first, I'm carrying it to a local machine shop to have it Flow tested stock so I'll know where I'm at on factory CFM specs. Then it's off to the workbench and die-grinder dremel. I have done old V-8 heads so this one should be fairly simple. there is alot of casting defects to remove on the intake side and where the intake mates to the head I can see about 1.5 to 2 mm of the head so port matching that will be first. the exhaust side is pretty much the same way but I'm only going to drum sand the port and opening to clean it and reshape the exit to match the copper exhaust bushing. I will post up some progress pics as soon as I start.

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mdopole

· #41 · Nov 25, 2009

I have a massively ported 250x head at my shop. It came off the engine that was blown and in myx when I bought it. Still have the stroker crank and bottom end with reverse removed for clearance. The crank takes a bigger wrist pin than the stocker and I couldnt find a piston that fit it to use.

It dropped a valve seat(oversized valves). I'll try and shoot you some good pics, but it wont be till after the weekend, cause I'll be out of town.

Been wanting to buy another used head off ebay and match port it to the other one I took off the quad.

tomgodd

· #42 · Nov 25, 2009

die grinder or dremel tool?

TRX2fiveO said:
I have to order a long shaft burr bit i can't reach the center of the runners too well other than that it's coming along nicely, I'm going through sanding drums like crazy!! lol. I knock off the cast defects with a burr bit and smooth with a drum so far so good, I got the bowls shaped really nice they actually look like a bowl now and not like a half-bowl.

TRX2fiveO

Discussion Starter · #43 · Nov 25, 2009

Im using both right now

tomgodd

· #44 · Nov 25, 2009

Handy tools!! I have them and love them.

TRX2fiveO

Discussion Starter · #45 · Nov 26, 2009

Well I pretty much have done all I am going to do in the combustion area it's pretty slick and shiny my camera phoe dosen't do it any justice.

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tomgodd

· #46 · Nov 26, 2009

You give one hell of a head job Moose! Keep up the Great work!

TRX2fiveO said:
Well I pretty much have done all I am going to do in the combustion area it's pretty slick and shiny my camera phoe dosen't do it any justice.

TRX2fiveO

Discussion Starter · #47 · Nov 26, 2009

Gee Thanks it was my first time...lol

Billy250X

· #48 · Nov 26, 2009

Tomgods right man.That looks nice.You have to make a video of the quad after this is all done and on.I wanna see how fast it is.:rating09:

mud99

· #49 · Nov 26, 2009

That looks good

mud99

· #50 · Nov 26, 2009

Billy250X said:
Tomgods right man.That looks nice.You have to make a video of the quad after this is all done and on.I wanna see how fast it is.:rating09:

There will be a video of me out running him LOL JK

TRX2fiveO

Discussion Starter · #51 · Nov 26, 2009

Only because 300ex didn't do my engine work I'm a po' boy i gots to do all my own work.lol

tomgodd

· #52 · Nov 26, 2009

Its definetly more rewarding when you do it yourself!

mud99

· #53 · Nov 26, 2009

How miney hours do you got in the head

Redracer

· #54 · Nov 26, 2009

TRX2fiveO said:
Only because 300ex didn't do my engine work I'm a po' boy i gots to do all my own work.lol

He can build my 450 up!!! I'm obviousley doing something wrong...

TRX2fiveO

Discussion Starter · #55 · Nov 26, 2009

Must be a jetting issue!!!LMAO

Redracer said:
He can build my 450 up!!! I'm obviousley doing something wrong...

mud99 said:
How miney hours do you got in the head

Maybe 2 hours but I still have a long way to go, I have yet to get in the centers or the port runners and i still need to smooth out the areas i've hit with the burring bits. I'm trying really hard not to rush this, being the impatient man i am that's why I left it at work..lol plus i'm not counting on a whole lot of gain but anything is better than nothing right? lol We will see.

TRX2fiveO

Discussion Starter · #56 · Dec 28, 2009

Well I got my Spiral rolls and cartrige rolls in just before Christmas so I will be resuming work tomorrow I'll get some pictures up as soon as I can.

Redracer

· #57 · Dec 28, 2009

Very nice, can't wait to see

Billy250X

· #58 · Dec 29, 2009

Yah dude this things gonna rip.

TRX2fiveO

Discussion Starter · #59 · Dec 29, 2009

I hope so, or this will be a learning experience..lol

Billy250X said:
Yah dude this things gonna rip.

Billy250X

· #60 · Dec 30, 2009

Dude I'm sure it'll help.You seem like your taking your time and not just rushing it.

41 - 60 of 162 Posts

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