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View Full Version : 95+ DP head Ported and Polished with Big Valves .... DONE!

nagelandy55
04-27-2008, 09:42 PM
Re-post from RPS

Well thanks to everyones help on here i'm finally done my head. Its a 95 head thats been ported and polished with big valves from Bo-port.
Port and Polish kit was baught from summit.
After i got the head back from the machine shop boring the holes there was a ton of material to grind out once again. Its no race ported head but i'm happy with how it turned out. Its about as good as a hill billy like myself can do in my shop :thumbsup:
Well enough said here are some pics, enjoy.

Before Valves where bored out, polished bowls done
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/Head011.jpg
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/Head008.jpg

After head was bored for bigger valves and remaining material was ground out.
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead006.jpg
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead007.jpg

OOOOO whats this?!?!?
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead002.jpg

Sexy!!
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead003.jpg

How much bigger you ask?
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/Valves005.jpg

Intake
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/Valves008.jpg

Exhaust
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/Valves006.jpg

Left is old and Right is new
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead013.jpg

Old
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead011.jpg

New
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead012.jpg

Head painted and Assembled
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead019.jpg
http://i209.photobucket.com/albums/bb308/nagelandy55/Big%20Valve%20Head/BigValveHead020.jpg
Ranger4banger97
04-27-2008, 10:24 PM
Dang, nice job!
Jesshwarren
04-28-2008, 09:25 PM
You will like the HP gain :=)
bruiser
04-29-2008, 07:35 PM
good work looks awesome grats
Riddle_Rob
04-29-2008, 07:41 PM
I KNOW WHERE YOU LIVE NOW!! LOL SCORE!
That saved me interweb search time!

Nice job, I'm still learnding a lot of stuff before anything like this happens.
flyin
04-29-2008, 09:57 PM
I like it. Keep us posted on how it changed the way the motor feels.
nagelandy55
04-29-2008, 11:42 PM
I'll keep everyone posted, i hope it doesn't move my powerband into the higher rpms. I hope to hit full boost around 2000rpm now :=) (probably wishful thinking)
Kurt
04-30-2008, 12:41 PM
Yeah, I would like to know the to cost in parts and machine shop labor. This is something I would like to do sometime too.
nagelandy55
04-30-2008, 08:18 PM
$168 for: Magnaflux, Wash, Valve job, New bearings installed and an oil seal
$235 for the valves

Port and Polish would probably be quite expensive but i did everything else myself.
Kurt
04-30-2008, 09:11 PM
That's real reasonable. Could you post the specs and source for the valves?
nagelandy55
05-01-2008, 01:10 PM
Intake is 1.89"
Exhaust is 1.59"

Bought from bo-port racing heads http://www.bo-port.com/
He doesn't list them on his web site but if you email him and tell him the application he'll do them.
nagelandy55
03-16-2010, 11:05 AM
I figured i would resurect this thread to show what i ended up doing to the head. I had always had detonation issues with this head. Turns out that the cumbustion chambers are too small, they need to be opened up to 60cc's. So last winter i opened them up to 61.5cc's. I ran the motor all last year at 15psi with no detonation issues at all so i'm confident this was the fix.

I've posted up what pics i have of the work i did to the head, i might have more to add later on if i find more.

Remember this is a 95+ DP head

http://i209.photobucket.com/albums/bb308/nagelandy55/Motor%20Build%202009/build2009011.jpg
http://i209.photobucket.com/albums/bb308/nagelandy55/Motor%20Build%202009/build2009015.jpg
http://i209.photobucket.com/albums/bb308/nagelandy55/Motor%20Build%202009/build2009016.jpg
BogusSVO
03-16-2010, 12:25 PM
looks good........
now send it to me so I can flow it!
Riddle_Rob
03-16-2010, 12:26 PM
Gah. Do you want to do mine for me? I have it sitting on the shelf waiting to be pampered but, I just can't bring myself to do it as I feel I'd eff something up pretty quickly.
nagelandy55
03-16-2010, 12:54 PM
I'm sure its nothing spectacular in terms of flow. If i where to do it again i'd probably do alot of things a little different, like do it all at once instead of taking the head off 2X haha.

Rob - Do you have big valves? If not i've got a spare head i could port ..... but its much more satisfying if you do it yourself.

If it does have big valves i wouldn't want to risk it haha i'm not a pro, just did it to see if i could.

Don't worry i was scared shitless doing it at first but after i got the first cylinder done like i wanted it, things went alot smoother.
Riddle_Rob
03-16-2010, 12:58 PM
AH. No, I don't have BVs yet. I plan on getting everything at once for my second head. THe BV's, cam, springs, retainers, adjustable cam, etc etc....
nagelandy55
03-16-2010, 01:04 PM
Good idea
DangerRanger01
03-16-2010, 01:20 PM
Looks awesome. I'm going to be doing mine here in a few weeks probably.
Is your valve train otherwise stock? I've read its best to upgrade your cam when you do big valves.
Riddle_Rob
03-16-2010, 01:59 PM
He just did the cam a couple weeks ago. There's a thread :)
Jesshwarren
03-16-2010, 04:19 PM
Looks good! It can help air flow a lot just make sure to take as much as you can away from the edge of the valve. Unshroud it all the way out to the edge so the air can get past the valve.
Bossman
03-16-2010, 08:07 PM
I'm curious what your compression was before and after.
RavenRanger1993
03-16-2010, 08:53 PM
Good job! We finished about the same time. I was too excited though and never took pictures. I'll let you know the dyno differences. I dynoed at 270 hp and 331 torque to the tire at 23psi and 16* Timing. I just changed the following:
Mild P & P 93 DP Head, Esslinger big valves, Unshrouded valves and opened up bowls, Esslinger 2277 cam, ARP Head studs, 1035 gasket, mild P & P upper and lower intakes, and 91 mustang 60mm throttle body with matched upper intake inlet.

Any estimates on HP/Torque increase???

I'll be retuning Saturday at DezRacing in Seekonk, MA!
AJ_Fritz
03-16-2010, 09:43 PM
i hope you opened up those chambers on the 93 head they are pretty tight.
RavenRanger1993
03-17-2010, 11:13 AM
Oh yea. Unshrouded the valves almost to the firing ring. Ended up being 58cc each.
nagelandy55
03-17-2010, 11:17 AM
Good job! We finished about the same time. I was too excited though and never took pictures. I'll let you know the dyno differences. I dynoed at 270 hp and 331 torque to the tire at 23psi and 16* Timing. I just changed the following:
Mild P & P 93 DP Head, Esslinger big valves, Unshrouded valves and opened up bowls, Esslinger 2277 cam, ARP Head studs, 1035 gasket, mild P & P upper and lower intakes, and 91 mustang 60mm throttle body with matched upper intake inlet.

Any estimates on HP/Torque increase???

I'll be retuning Saturday at DezRacing in Seekonk, MA!

These pics are from last winter, i just never did post them up.
RavenRanger1993
03-19-2010, 05:56 PM
So much for that. Dezracing called me today and cancelled my tune for tomorrow, awesome!!! Ha!! They told me the dyno is coming out of the ground this week for maintenance so it looks like it'll be a few weeks before I get tuned.