• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Cylinder heads


Zer0PSI

New Member
Joined
Sep 21, 2007
Messages
110
Reaction score
4
Points
0
Location
Johnson City, TN
Vehicle Year
1994
Make / Model
Ford
Engine Size
2.3
Transmission
Manual
I'm starting out with a N/A 2.3 and adding the turbo with forged internals. Can I make just as much power with the N/A cylinder head as the turbo head?? And if so would the "D" port or oval port head be better??
 


Davis

Member
RBV's on Boost
Joined
Sep 24, 2007
Messages
509
Reaction score
8
Points
18
Age
37
Location
Long Beach, CA
Vehicle Year
1988
Make / Model
Ford
Transmission
Manual
the NA head do just as well as the turbo head and wont be cracked like 80% of the turbo heads out there. when you rebuild the head just make sure you get hardened exhaust valve seat inserts put in so that the seats dont burn out. also round/smooth off the protrusion between the valves (in the combustion chamber) to reduce the tendency to ping. unless you are going for over 350 horsepower, i think it doesnt really matter what head you use.

(p.s. this is what i did, i went the same route as you. looking back it would have probably been cheaper to just swap in a turbo motor.)
 

pony-up

New Member
Joined
Aug 8, 2007
Messages
8
Reaction score
0
Points
0
There is a little difference between an N/A head and a turbo head. I have one of each from the early '80s, w/ hydraulic flat-tappets. The turbo head has some circular machine cuts around the valves that de-shroud them, a little. I suppose it would provide a little better flow at low-lift. The shape of the combustion chamber is a little different, too.
 

shadetree

New Member
Joined
Sep 9, 2007
Messages
1,794
Reaction score
9
Points
0
Age
84
Location
East Texas
Vehicle Year
1994
Make / Model
Explorer Sport
Engine Size
4.0
Transmission
Automatic
Use the D shaped heads. They flow a little better. You want the head to have a D shaped(open chamber) combustion chamber also. The heart shaped combustion chamber(closed chamber) has a higher compression ratio, and the engine will have detonation problems at higher boost levels. You can grind out the combistion chamber to lower the compression ratio if you can't find ones with the D shape. shady
 

Sponsored Ad


Sponsored Ad

Staff online

Today's birthdays

Member & Vendor Upgrades

For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.

Latest posts

Truck of The Month


Kirby N.
March Truck of The Month

Recently Featured

Want to see your truck here? Share your photos and details in the forum.

Follow TRS On Instagram

TRS Events

25th Anniversary Sponsors

Check Out The TRS Store


Sponsored Ad


Sponsored Ad

Sponsored Ad


Amazon Deals

Top