any one kno where i can get instructions on how to port and polish a cylinder head.
DRIVE HARD OR DONT DRIVE AT ALL!!!
Just remember is you remove material from the combustion chamber you are going to lower the compression ratio. Which decreases hp on an n/a motor.
I would just smooth out the ports. yada yada.....
My Car
Save yourself the time and trouble. Take the head to the machine shop and have them do it. I just had mine done ported polished resurfaces and 3way valve job cost me $310 that inclueded the whole topset gaskets and new bolts. Just adding my two cents.
hey Mike can you break it down from the your bill, what was the cost on the valve job alone?
doing the head work is not for someone who is not mechanically inclined or timid about the work either. and $310 would be an awesome price, now if someone down here would do it that cheap...lol. the whole too slow too delirious thing is still in full swing in south Florida, which means local prices for anything performance went up and stayed there. I'll see what a couple of local shops here want for the job. with and without enlarging the valve seats for the performance 1mm oversize valves like what I'm going to be doing.
Personally I'd just take it to a machine shop that knows what they are doing.
I was a retard, and now I'm permanently banned.
Michael Woolever wrote:Save yourself the time and trouble. Take the head to the machine shop and have them do it. I just had mine done ported polished resurfaces and 3way valve job cost me $310 that inclueded the whole topset gaskets and new bolts. Just adding my two cents.
See that might sound nice to do but there are the cons of why you wouldn't want to do it.
First, if you have a head built by a company that is more relative to that motor or a company that is more relative to our platform, that's a definite plus. By having someone just port as big as they want, your not necessarily having the best flow that you can out of that head.
If you buy a head or even send them a head to port & polish, they know what specifications to port the head and they also flow test the head. Alot of places won't do such a thing. They will port it and send it your way.
Also, when you usually buy a P & P head, they give you goodies with it (springs, retainers etc.), at least in my case that's what they did. That would be in your best interest to really have the best performance out of your head.
Now CAVI.DEMON, I see you have a 2.2 OHV motor. There are 2 companies I would recommend:
Patriot Performance
Jbody Performance
If I were you, I'd contact Jbody performance first but both are good companies.
Now realize that since you have an OHV motor, that the cam under your head is really allowing the airflow to enter your bottom end and will cap your airflow in a sense. I would invest in a Cam for your motor (whether your staying all motor or boosting). Contact JBP and tell them what your plans are and ask them what they would suggest.
If you have anymore questions, just ask. Good Luck.
www.kronosperformance.com / 732-742-8837
i;d also reccomend locally.... more times than nought, if you find a decent shop, the prices will be far less than what you can find online...
hey bud,
this is my advise, i just got done with my 2.4 head which is fully ported and polished. first of all, if you have never did any porting work, i would NOT recomend you do it yourself. there is so many important things that come into play when porting a cylinder head. as for the 1mm oversize valves which you said you are doing, i dont know if you know but you just cannot have the seats enlarged for them to work. you also have to have larger valve guides installed for them to work. and i hate to break it to you, but as far as the money you will spend to make them work and the amount of power you will gain with them, its not worth it.
Quote:
Patriot Performance
Jbody Performance
If I were you, I'd contact Jbody performance first but both are good companies.
Now realize that since you have an OHV motor, that the cam under your head is really allowing the airflow to enter your bottom end and will cap your airflow in a sense. I would invest in a Cam for your motor (whether your staying all motor or boosting). Contact JBP and tell them what your plans are and ask them what they would suggest.
If you have anymore questions, just ask. Good Luck.
Haven't dealth with patriot-performance, but I have JBP stage 2 cams. I visit JBP almost once a month and have seen their 2.2L, 2.4L and ECOTEC heads and man are they something. The guy that ports them knows all the intricacies (spelling
) of these engines, like honda killer said.
stick with the companies that do our engines... they know it the best.
hey i was wondering what is a three angle valve job?
Nick
tryin to gather info for a sleeper
High Performance Valve Job
Hot Heads
Sport Compact Car
head work photo gallery
stop making sense
Mikes Speed Shop
there is allot of good reading there, and no I have not done business with them. I like the fact that they use plain language to explain what it is that they do.
What is a 3 angle valve job?
A three angle valve job has two more angles than a standard valve job. The benefit comes from one angle placed on top and the other placed on the bottom of the standard seat angle. This produces a curved effect so air and fuel will flow with less resistance. The result is better response and better performance.
Why do I need hardened exhaust valve seats in my cylinder heads?
The use of unleaded gas in a street driven engine requires hardened exhaust seats. A regular exhaust seat will pound down and cause the head to crack if continued to be run.
What do I gain by using a larger valve?
Increased air flow at upper RPMs will allow the engine to produce greater amounts of horsepower.
What does pocket port mean?
This is a fairly broad term. It is the blending of the lower angle of a valve seat into the intake and exhaust ports of the head.
Why should I mill my head instead of belt sanding it?
A head that is belt sanded will look flat and smooth but if checked with a straight edge will show a wave effect across it's surface. This will cause a head gasket to not seal correctly. The correct process is to mill the head. This insures the head will be flat and true all the way across the surface.
Is there a benefit to using torque plates when boring and honing my block?
The torque plates stress the block and cylinders in the same way the cylinder heads do. The cylinders will be round and straight all the way down when this process is used. It is highly recommended for any high performance street or race engine.
How safe is a crank that has been ground to an under size?
When ground to an under-size correctly, the crank will be just as safe to use and as strong as a standard size crank.
Should I balance my motor?
Balancing an engine will help in many ways. The engine will run smoother. It will be more efficient which will mean more power and better mileage. Services
What does steel shot blasting do for my rods?
Steel shot blasting your connecting rods will not only clean the rods but will relieve stress also. The outside of the rod will be peened to help correct any surface flaws that might cause a crack to form.
Will bushing the small end of the connecting rod give me more horsepower?
No horsepower gains will be noticed from a bushed, full floating, wrist pin. The ease of changing the piston on the rod is the main benefit.
that should keep ya happy for awhile, I've been busy
Sticky!!! Sticky!!! Sticky!!!
Blue01GT
