Got my P51s ported -- headed back to the track

Page 1 of 2 1, 2  Next

Go down

Got my P51s ported -- headed back to the track

Post  psfracer on September 2nd 2012, 11:24 am

Hopefully I will be at the next Friday night race at Famoso on 9/7 if its not too hot. Picked up 40 cfm on the exhaust side and intake numbers look great as well as I went with some 2.300 titanium intake valves. But the real test will be the Ets at the track!

A big thank you to Charlie Evans. He shipped out the heads while I was in Montana, before he even got my check for the work. Was easy and great to work with.

Here are some pictures. I put the motor back together yesterday afternoon while watching the YB Nationals on the live feed.










avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 2nd 2012, 11:29 am

look just like mine......... Smile


avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  bruno on September 2nd 2012, 11:37 am

good luck , cant wait to see the improvements
avatar
bruno
Moderator
Moderator

Posts : 10539
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 2nd 2012, 11:37 am

They didn't come with a cape though.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  AZFairlane on September 2nd 2012, 12:34 pm

richter69 wrote:look just like mine......... Smile



Are you running the shaft rockers too Jon?
avatar
AZFairlane
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 538
Join date : 2009-02-02
Age : 65
Location : North of Phoenix

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  dfree383 on September 2nd 2012, 12:43 pm

psfracer wrote:They didn't come with a cape though.

Don't worry... The cape is awarded after the first run! cheers
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 13968
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  cool40 on September 2nd 2012, 1:10 pm

dfree383 wrote:
psfracer wrote:They didn't come with a cape though.

Don't worry... The cape is awarded after the first run! cheers
he may need something to wipe his ass on! Laughing
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7135
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 2nd 2012, 1:18 pm

AZFairlane wrote:
richter69 wrote:look just like mine......... Smile



Are you running the shaft rockers too Jon?


no, stud mounts fo me.
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 3rd 2012, 7:30 pm

So car is back together and running. I used the flow tool I got and discovered that I was actually running 9.5 psi fuel pressure for the nitrous system when I was at Tenn. I am going to drop it to 7 psi and go from there.

I took a reading from right after the regulator and the big gauge was showing 2.5 psi more then the piece of crap 1 1/2 inch gauge. So much for accuracy. Its an aeromotive gauge to.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  bruno on September 3rd 2012, 7:38 pm

did you do a cam change ??
avatar
bruno
Moderator
Moderator

Posts : 10539
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 3rd 2012, 7:57 pm

which flow tool you have now?
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  Barney on September 3rd 2012, 8:01 pm

2.5 pounds is huge, I'm surprised it was running as good as it did on spray with that much FP.
avatar
Barney

Posts : 2577
Join date : 2009-12-02
Age : 42
Location : Kirkland, Il

View user profile http://www.hdraracingseries.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 3rd 2012, 8:03 pm

bruno wrote:did you do a cam change ??

No, still running the 282 / 296 @ .050 duration, .773 / .749 lift cam on a 112 lobe center.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 3rd 2012, 8:12 pm

richter69 wrote:which flow tool you have now?

This one. Its 5 inches across, its bigger then I thought it would be.



Barney wrote:2.5 pounds is huge, I'm surprised it was running as good as it did on spray with that much FP.

See--thats the thing, it only went 5.89 on a 150 shot, where here at home its gone 6.0Xs on motor all the time. So I knew something was off, but I thought it was just the heat and the 150 degree track temps.


Last edited by psfracer on September 3rd 2012, 8:16 pm; edited 1 time in total
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  Barney on September 3rd 2012, 8:15 pm

psfracer wrote:
richter69 wrote:which flow tool you have now?

This one:



Barney wrote:2.5 pounds is huge, I'm surprised it was running as good as it did on spray with that much FP.

See--thats the thing, it only went 5.89 on a 150 shot, where here at home its gone 6.0Xs on motor all the time. So I knew something was off, but I thought it was just the heat and the 150 degree track temps.
A lot of us were baffled that day. Hopefully it will really pick up now that you got it dialed in.
avatar
Barney

Posts : 2577
Join date : 2009-12-02
Age : 42
Location : Kirkland, Il

View user profile http://www.hdraracingseries.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 3rd 2012, 8:22 pm

yeah i dunno, i put green oil back in mine, changed the plate, and the fuel.......... went from a 50 to a 23 so go figure...... and picked up 5 mph.......this was is near same da........I thought TVRP was shit but now Im not so sure.


what jet are you using in your flow tool? I had one I made but it was fluttering real bad, I bought a new reg and one of those big ass flow tools from I-S, I checked my old reg and it was dead on where my old tool showed and the fluttering stopped lol. I went ahead and swapped the reg and put the other in the trailer for a spare. The quick disconnect on the I-S tool is awesome.
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 3rd 2012, 8:31 pm

a 73 jet is in the flow tool. Should I flow it without it? I could see what difference it makes.

Should I hook it up closer to the distribution block or right at the regulator?

Cool--so next year if one of my regulators goes out, I know where to go. To the FABIO PARTS TRAILER.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  Barney on September 3rd 2012, 8:33 pm

Just set it with the 73 and you'll be fine.
avatar
Barney

Posts : 2577
Join date : 2009-12-02
Age : 42
Location : Kirkland, Il

View user profile http://www.hdraracingseries.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 3rd 2012, 8:54 pm

yep use the 73.

at the reg is fine
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  bruno on September 3rd 2012, 9:16 pm

what is yout tune in the fogger ? still sounds way rich at 7 lbs ...and yes flow with a 73 jet after the reg
avatar
bruno
Moderator
Moderator

Posts : 10539
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  psfracer on September 3rd 2012, 9:26 pm

Yeah, the tune that was given to me, 7 psi was to be the starting point so I didn't burn anything up. So we will see what happens. I plan on starting at 7 then reading the plugs.

What do most people run? A 4 size spread (24-20) and 6 psi? That is what I hear most often.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  richter69 on September 3rd 2012, 9:31 pm

let the plugs and timeslip tell you what it wants.
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  Barney on September 3rd 2012, 9:31 pm

I use a 4 jet on the smaller tunes( below 28) and a six jet spread for larger tunes ( over 28 ). You will probably end up between 5 1/4 and 5 3/4 fp when all is said and done. As far as jet spread goes I think every one and every different combo is a little different.
avatar
Barney

Posts : 2577
Join date : 2009-12-02
Age : 42
Location : Kirkland, Il

View user profile http://www.hdraracingseries.com

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  jbozzelle on September 5th 2012, 7:45 pm

Where'd you get that flow tool from? It's got a McDaniel gauge on it. They're local to me and manufacture good stuff.

jbozzelle

Posts : 3511
Join date : 2009-08-10
Age : 43
Location : New Orleans

View user profile

Back to top Go down

Re: Got my P51s ported -- headed back to the track

Post  bruno on September 5th 2012, 9:20 pm

psfracer wrote:Yeah, the tune that was given to me, 7 psi was to be the starting point so I didn't burn anything up. So we will see what happens. I plan on starting at 7 then reading the plugs.

What do most people run? A 4 size spread (24-20) and 6 psi? That is what I hear most often.

i know you have your tuneups already but , tell Steve that you are from 429-460.com and he will give you a better tune to start your baseline .......running rich is going to cause more harm then good .....imo
avatar
bruno
Moderator
Moderator

Posts : 10539
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Page 1 of 2 1, 2  Next

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum