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-   -   24v head performance (http://www.competitiondiesel.com/forums/showthread.php?t=199926)

TheSilverBullet 04-16-2018 10:28 AM

24v head performance
 
Going to be building a head for my p pump 24v. Looking for advice on a street driven application. Im thinking Im going to lightly port match the exhaust side myself.

Id also like to use exhaust valves on the intake. Im reading you need to machine new seats in for this. Would the oversized seats be less prone to cracking?

Also Id like to do bronze valve guides. Trying to get a price together and see if I want to do it myself and have a local machine shop help me or just pull the trigger on like the d and j stage 1 head.

wwentzler 04-16-2018 11:14 AM

What kind of power are you planning to make? And what is the planned turbo setup?

TheSilverBullet 04-16-2018 06:38 PM

63sxe over S475
6x13 vco
Farrel 215 pump
Colt stg. 4 cam
Was originally shooting for 750. Loooking for 900

95cummins5.9 04-16-2018 06:40 PM

Quote:

Originally Posted by TheSilverBullet (Post 2664236)
63sxe over S475
6x13 vco
Farrel 215 pump
Colt stg. 4 cam
Was originally shooting for 750. Loooking for 900

Intake valves on the exhaust or the other way around like the first post? Either way sounds like it would bottleneck.

TheSilverBullet 04-16-2018 06:45 PM

Quote:

Originally Posted by 95cummins5.9 (Post 2664238)
Intake valves on the exhaust or the other way around like the first post? Either way sounds like it would bottleneck.

I was reading that somewhere thd intake had 35* seat and the exhaust had 45* seat so theyd run all exhaust valves. Just gotta do a lot of reading sounds like Ill probably just be doing the posting myself.

Rich dzl 04-16-2018 06:49 PM

Send it to nyes in Muncie IN

95cummins5.9 04-16-2018 06:51 PM

Quote:

Originally Posted by TheSilverBullet (Post 2664240)
I was reading that somewhere thd intake had 35* seat and the exhaust had 45* seat so theyd run all exhaust valves. Just gotta do a lot of reading sounds like Ill probably just be doing the posting myself.

You can have whatever angle seat cut on the head and valves. You could back cut the valves too. Typically the more angles on the seat makes it last a lot less too.

95cummins5.9 04-16-2018 06:53 PM

Quote:

Originally Posted by TheSilverBullet (Post 2664240)
I was reading that somewhere thd intake had 35* seat and the exhaust had 45* seat so they’d run all exhaust valves. Just gotta do a lot of reading sounds like I’ll probably just be doing the posting myself.

I was thinking 12v when I said the bottleneck comment forgot about the 4 valve head. Sorry.

TheSilverBullet 04-16-2018 06:55 PM

Yeah we ran 48* on my first 12v head. I thought you could cut any angle you want maybe there was another reason I missed lol.

95cummins5.9 04-16-2018 06:59 PM

Quote:

Originally Posted by TheSilverBullet (Post 2664247)
Yeah we ran 48* on my first 12v head. I thought you could cut any angle you want maybe there was another reason I missed lol.

Seat contact probably. Burn seat/valves.

wwentzler 04-17-2018 05:26 AM

Personally I wouldnt do anything to the head. Realistically with those compounds you have very little to gain and a fair amount to lose.

TheSilverBullet 04-17-2018 07:26 AM

Quote:

Originally Posted by wwentzler (Post 2664297)
Personally I wouldnt do anything to the head. Realistically with those compounds you have very little to gain and a fair amount to lose.

Ive been thinking that also. I tend to over do everything with these. Im thinking just gasket match the exhaust side and a good valve job.

wwentzler 04-17-2018 08:04 AM

Quote:

Originally Posted by TheSilverBullet (Post 2664308)
Ive been thinking that also. I tend to over do everything with these. Im thinking just gasket match the exhaust side and a good valve job.

Its your build, but i'm not even sure i would do that. You won't gain anything at all, but you'll lose response time, maybe by a totally unoticable amount, but a loss nonetheless.

YoungDiesel27 04-17-2018 08:15 AM

Proper bowl work is not going to kill response time

jlbayes 04-17-2018 08:17 AM

Or a good valve job.

wwentzler 04-17-2018 08:22 AM

Quote:

Originally Posted by YoungDiesel27 (Post 2664317)
Proper bowl work is not going to kill response time

Can you walk me through the process of gasket matching a bowl? That's new to me.

YoungDiesel27 04-17-2018 09:07 AM

Quote:

Originally Posted by wwentzler (Post 2664322)
Can you walk me through the process of gasket matching a bowl? That's new to me.

Never said that. Enjoy your stock head jackass!

94 12valve 04-17-2018 11:25 AM

If your wanting to do anything to the head a good valve job, bowl blend and smoothing out the exhaust works wonders. Also you way want a better primary charger for your 900 RWHP goal

Rich dzl 04-17-2018 05:11 PM

Stock heads for stock trucks . Head flow matters and loss of Turbulence With bowl/or valve pocket work is the goal on a street head .. gasket matching isn't the only issue on a head ..

RacinDuallie 04-17-2018 06:00 PM

Quote:

Originally Posted by wwentzler (Post 2664316)
Its your build, but i'm not even sure i would do that. You won't gain anything at all, but you'll lose response time, maybe by a totally unoticable amount, but a loss nonetheless.

Lmfao.:hehe::hehe::bang:bang:bang


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