|
|
05-31-2012
Hey guys I'm going to buy a pair of port and polish heads off a guy, was wondering if you guys would look at some of the pictures and give me some insight on them. Also which casting number should I ask for pictures of, just to be sure of fitment?
Sent from my Droid Razr using Xparent Red Tapatalk 2
05-31-2012
why dont people know how to use macro mode?!!?!
05-31-2012
As long as your doing n/a to n/a or supercharged to supercharged there should be no fitment problems. And you best be port matching your lim too or else your kinda limiting your potential with those heads.
Originally Posted by The Sunfire Guy
05-31-2012
Does it look like a good port and polish job was done?
Sent from my Droid Razr using Xparent Red Tapatalk 2
05-31-2012
Appears the heads have been re-surfaced. Combustion chambers are "as cast" from the factory, and so are the intake and exhaust ports.
05-31-2012
So you saying they don't look ported and polished?
Sent from my Droid Razr using Xparent Red Tapatalk 2
05-31-2012
Looks like very little if anything was done to the heads. I can still see the casting flash inside the ports and in the chambers. Do they come with valves and springs? Ported heads should at least be "gasket matched" on the intakes, combustion chambers polished and have some bowl work done. These appear to have none of the above.
05-31-2012
The guy says that's the texture the carbide left. And that the heads were coated in a sealer so they wouldn't rust. Says that's why the ports look dark. He's going to polish them up before he ships them.Looks like very little if anything was done to the heads. I can still see the casting flash inside the ports and in the chambers. Do they come with valves and springs? Ported heads should at least be "gasket matched" on the intakes, combustion chambers polished and have some bowl work done. These appear to have none of the above
Sent from my Droid Razr using Xparent Red Tapatalk 2
05-31-2012
If someone told you those heads you are showing in the pictures where ported/polished, they are are not telling you the truth.
05-31-2012
He said he did a valve job on them to and he's including the valves. Says the valves are 1.89 and 1.58. Does it look like he did the valves? He wants 200 dollars is that a good price even if I still need to do a little bit more work?
Sent from my Droid Razr using Xparent Red Tapatalk 2
06-01-2012
These are stage 3 Intense heads for reference on porting/polishing.
We can see in the chamber that they are fairly smooth.
Exhaust port, material has been removed to the point that you can see the brass valve guide and inside the area, it is clearly clean and smoothed.
Intake side. Notice how the ports have been enlarged, smoothed etc.
Intake opened up to gasket match just like the head
06-01-2012
Personally, I would walk away from someone that gives inaccurate information.
06-01-2012
"He said he did a valve job on them to and he's including the valves. Says the valves are 1.89 and 1.58. Does it look like he did the valves? He wants 200 dollars is that a good price even if I still need to do a little bit more work? "
Is this the same person that said the heads were p&p?
Personally, I would walk away from someone that gives inaccurate information.
06-01-2012
Actually, you want the intake side to not be as smooth as the exhaust...
Proper air molecule atomization is key.
06-01-2012
I thought we were all about MOAR AIR = MOAR POWA
...I would probably still walk away, unless you want to buy them and try to improve on where this guy obviously left off.
Originally Posted by AmericanSoldier
06-01-2012
you want the intake side to have texture. it is not just air going thru here, it is air and fuel. if the walls are too smooth then the fuel will come out of its vapor form and collect on the walls of the port. this will cause unbalanced fueling. the ruff walls cause turbulence that creates a better boundary layer and keeps the fuel in suspension.
as for the level of porting on them... my first impression is that the only thing done was a valve job. but bill is right you can see in the ports that the valve guides were cut down some. the porting isnt major. but then for an NA engine you don't want to go over board unless you plan to go turbo. $200 sounds good to me if it includes valves and like you asked are good cast #'s and are not cracked. also make sure they weren't milled down too far either.
06-01-2012
Casting #8134, can someone help me find if these will fit I haven't had much luck.
Sent from my Droid Razr using Xparent Red Tapatalk 2
06-02-2012
Still debating weather a set of project heads are worth the hassle :-\ I'm leaning towards no. Money to do it right for 15-20hp doesn't seem worth it.
Sent from my Droid Razr using Xparent Red Tapatalk 2
| « Previous Thread | Next Thread » |
| Tags for this Thread |
| Bookmarks |
Bookmarks |
