porting a head DYI, need some direction Options

[02loftsmoor]

I'm following a guideline that Ray posted a while back on using 1.7 heads, opening up the exhaust valve to a 1.8 exhaust valve..and the port the hell out of the exhaust port. relocate the spark plug.
I need some guidance , pictures, measurements anything that could help me DYI port these heads. and I will say please and thank you, and will buy a beverage of your choice. (IMG:style_emoticons/default/beerchug.gif)

[Cap'n Krusty]

Using your flow bench, determine the flow. Calculate the most effective flow rate for your C/R, camshaft, displacement, and intake/exhaust systems. Again using your flow bench to determine the changes as you go, remove material from the appropriate places until the desired port profile and flow rate are achieved for the RPM range you plan to use. It's that simple ......................

The Cap'n

[Jacob]

Here is a site that tells you how to build a flow bench using a shop vac.
http://www.diyporting.com/flowbench.html

and here is a guy that produced a series of videos on how to build one.
https://www.youtube.com/watch?v=RNuVOB4-HuA

[02loftsmoor]

Cap'n your killing me, I'm just a poor service manger that has never built a T4, is there a simpler way? not wanting to build a fire breather on my first build.. I've been known to grenade an engine or two.

but that shop vac flow bench is cool

Using your flow bench, determine the flow. Calculate the most effective flow rate for your C/R, camshaft, displacement, and intake/exhaust systems. Again using your flow bench to determine the changes as you go, remove material from the appropriate places until the desired port profile and flow rate are achieved for the RPM range you plan to use. It's that simple ......................

The Cap'n

[0396]

Cap'n your killing me, I'm just a poor service manger that has never built a T4, is there a simpler way? not wanting to build a fire breather on my first build.. I've been known to grenade an engine or two.

but that shop vac flow bench is cool

Using your flow bench, determine the flow. Calculate the most effective flow rate for your C/R, camshaft, displacement, and intake/exhaust systems. Again using your flow bench to determine the changes as you go, remove material from the appropriate places until the desired port profile and flow rate are achieved for the RPM range you plan to use. It's that simple ......................

The Cap'n

Some procedures are better left to the professional.

[02loftsmoor]

did you see what they want to do a port/polish,, OMG,, thats why i asked,, my MG's you could make a jig and you had to be careful of the water jacket . I'm looking for some sort of guild line to stay out of trouble..

[messix]

some simple things are port match to intake and exhaust manifolds, remove casting flash, smooth valve bowl before valve seats install then smooth transition to valve seat.

a stock size street engine wont need/benefit from much extensive work.

[messix]

did you see what they want to do a port/polish,, OMG,, thats why i asked,, my MG's you could make a jig and you had to be careful of the water jacket . I'm looking for some sort of guild line to stay out of trouble..

no water jackets to worry about on a T4... but take too much out and you run into cracking problems.

[02loftsmoor]

I have the bits to build 2056, correct me if I'm wrong on the displacement, needing advice on a cam. I have a set of Weber 40s.
I would like to keep the RPMs lower, Im wanting torque mid range punch

[r_towle]

It's a weird shape in there so you cannot measure it with conventional tools.
A flow bench, homemade is really the best way to make sure you are doing the same thing to all four ports...

He may sound a bit sarcastic, but he is right on this one.

Read the shop design....build one of those.

[02loftsmoor]

my EST for European motor sports

[02loftsmoor]

The Capt'n is a good guy, just a salty dog!!

[smokum]

to say Shapping and porting is simple, is no diff than saying rebuilding a engine is simple. its just not true. IT is a science i did not have the time or space to do a flow bench properly so i found an engine builder that was willing to work with me as i made changes to my heads. I would grind and he would flow. it showed me were i made mistakes and gains.
David Vizard is the god of head porting he wrote the book! or books on it.
all our engines are the same internally let no one tell you differnt.

http://www.popularhotrodding.com/tech/0610...r_head_porting/

http://www.popularhotrodding.com/enginemas...cylinder_heads/

[jasons]

my EST for European motor sports

Honestly, knock off the 2.0 plugs and the labor goes down by half. The rest is parts you are buying either way.

[bdstone914]

I have a set if 2.0 heads that I just pulled off an engine today. I would sell them for $ 450 for the pair. You would just need a standard rebuild. I can get them blasted and inspected for damage if you are interested. You can expect to replace exhaust guides. I also have the cylinder tins.

[02loftsmoor]

I have a set if 2.0 heads that I just pulled off an engine today. I would sell them for $ 450 for the pair. You would just need a standard rebuild. I can get them blasted and inspected for damage if you are interested. You can expect to replace exhaust guides. I also have the cylinder tins.

bstone914 thanks for the offer i have a set of 2.0 heads, according to Raybe the 1.7 heads were the way to go, with a few mods. the most relilable

[Jake Raby]

Wow.

[draganc]

Wow.

Since you don't focus on T4 kits anymore, how about you share 5% of your knowledge.

Remember Kindergarden, sharing is nice. (IMG:style_emoticons/default/biggrin.gif)

[02loftsmoor]

tell us the skinny Ray

[02loftsmoor]

Sorry "Jake ""