552 Dyno Day

Go down

552 Dyno Day Empty 552 Dyno Day

Post  glenevans on June 4th 2019, 3:50 pm

Got my 552 ready to go up to Twin Falls, Idaho for Dyno next Thursday. Hoping all goes well, have had troubles with rod bearings lately. This is C9 block, scat forged crank, P51 heads (ported) with 2.30 intake valves and titanium retainers for the 1.64" springs. 280* intake duration, .796" ish lift Intake, 300* exhaust (small 2" headers). Crower 1.73 rockers, topped with mafia intake and 1150 cfm carb. Kaase oil pump, with bigger oil pickup tube. 14.4 compression. Also have Jomar cone spacer with 3/4" open spacer. Many thanks for all the help with Very Happy this motor!

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 4th 2019, 6:50 pm

Hoping for 900 to 950hp range. Dyno is at 3730 ft. elevation

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  litshoot on June 5th 2019, 2:01 pm

No disrespect, im guessing closer to 800 due to altitude its costing roughly 100-110 horsepower at that altitude, and those headers seem a little small.

litshoot

Posts : 72
Join date : 2015-09-11
Location : Sfl

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 5th 2019, 2:34 pm

Yes, you are correct, we are normally around 13% ish less hp here due to altitude. (I'm even a bit higher at around 4400 ft where I live) I was thinking in low altitude terms...ha ha

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  68galaxie on June 5th 2019, 2:36 pm

Sounds like a fantastic build.
I am sure you will come close to or meet your goals.

I would also assume the dyno output would be corrected HP and Tq.

Cheers!
68galaxie
68galaxie

Posts : 319
Join date : 2010-04-13
Location : Edmonton AB

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 13th 2019, 11:53 pm

Ran the motor today, no problems, seemed to run fine. Oil filter was clear of any metal particles. Made 908 hp running these pretty small headers they had, my headers wouldn't bolt up with dyno stand. The port size looked like only 1 7/8" wide ha ha. Went up to 93 jet and 29* timing. 112 fuel.

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  Mark Miller on June 14th 2019, 12:00 am

Congrats nice numbers!! Very Happy

Mark Miller

Posts : 1417
Join date : 2009-09-01

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  68galaxie on June 14th 2019, 12:09 am

Awesome!!

Were you running a vacuum pump?
Intake manifold otb or ported?

I am sure there is more in the combo! Well done.

68galaxie
68galaxie

Posts : 319
Join date : 2010-04-13
Location : Edmonton AB

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  5pointslow on June 14th 2019, 7:34 am

bad ass #s
looks like a great build

whats it going in ?
5pointslow
5pointslow

Posts : 1253
Join date : 2009-10-11
Age : 30
Location : MASSHOLE aka BOSTONIAN

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 14th 2019, 11:40 am

Thanks for the kind words guys. Here is a little more info on it. No vacuum pump. Mafia intake, just cleaned up runners and plenum, port matched the very top of manifold about 1/8 to 3/16" to match up to head. torque peak was at 6100 rpm, 742 lb. ft. 900hp at 6500 rpm, going steadily up to 908 at 7200 rpm. Held 50 to 60 oil pressure with the full groove main bearings and kaase pump. This is my third solid roller motor, the other two had rod bearing issues, that's why the full groove main. (had to buy two sets of 1/2 groove) Going into my '69 Mach 1, been hashing on it with various motors since 1982!!!!! ha ha



glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 14th 2019, 11:52 am

Will try to post a dyno sheet later on, but torque was 735 at 5400, 737 at 5600, 737 at 5800, 741 at 6000, 742 at 6100, 737 at 6300 731 at 6400. Within 12 lb. ft. for 1000rpm range

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  Lem Evans on June 14th 2019, 12:13 pm

glenevans wrote:Will try to post a dyno sheet later on, but torque was 735 at 5400, 737 at 5600, 737 at 5800, 741 at 6000, 742 at 6100, 737 at 6300 731 at 6400. Within 12 lb. ft. for 1000rpm range

Please do post the dyno sheet.

Lem Evans

Posts : 7247
Join date : 2008-12-03
Location : Livermore , Ky

View user profile http://bfevansraceparts.com

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 14th 2019, 4:47 pm

Trying to post pic of dyno sheet from phone, keeps saying file is too big.....but says "0" mb size ????

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  Paul Kane on June 15th 2019, 4:52 pm

552 Dyno Day Glenne10
Paul Kane
Paul Kane

Posts : 874
Join date : 2009-09-15
Location : San Francisco Bay Area

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

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 15th 2019, 5:10 pm

Thanks Paul!

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  c.evans on June 16th 2019, 12:14 am

IMO the reason why it flattened out from 6,500 to 7,300 rpm is because those headers are too small and were a real bottleneck restriction to the engines ability to breath. I wish you had a set of my Chevy header adapters on those ports and then borrowed some 2.250" BB Chevy headers to bolt on it while it was on the dyno. Then the exhaust would not have been a restriction. This in turn may have called for some jetting changes or different carb tuning.
Charlie

c.evans
BBF VENDOR SPONSOR
BBF VENDOR SPONSOR

Posts : 2234
Join date : 2008-12-03

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  rmcomprandy on June 16th 2019, 12:25 am

c.evans wrote:IMO the reason why it flattened out from 6,500 to 7,300 rpm is because those headers are too small and were a real bottleneck restriction to the engines ability to breath.  I wish you had a set of my Chevy header adapters on those ports and then borrowed some 2.250" BB Chevy headers to bolt on it while it was on the dyno. Then the exhaust would not have been a restriction. This in turn may have called for some jetting changes or different carb tuning.
Charlie

YEP ... unless he wants a wide range abundance of mid range torque ... the headers need to be larger.

rmcomprandy

Posts : 5373
Join date : 2008-12-02
Location : Roseville, Michigan

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

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  glenevans on June 16th 2019, 1:31 pm

I will probably try some adapters. How thick are they?

glenevans

Posts : 281
Join date : 2013-01-22
Age : 55
Location : No. Utah

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  c.evans on June 16th 2019, 5:21 pm

They are wedged shaped in trms of the side profile and go from 5/8" to 7/8".

c.evans
BBF VENDOR SPONSOR
BBF VENDOR SPONSOR

Posts : 2234
Join date : 2008-12-03

View user profile

Back to top Go down

552 Dyno Day Empty Re: 552 Dyno Day

Post  Lem Evans on June 16th 2019, 8:33 pm

I do think that Glen's engine should have a bigger primary tube but....

J.Y. Kelly's 562" P51 did this...

950.6 @ 6,700 rpm
950.6 @ 6,800 rpm
951.3 @ 6,900 rpm
950.7 @ 7,000 rpm
I wish it had been pulled higher...this was a decade ago.
____________________________________________________

Chris S. 588" engine four years ago.

1,017 @ 6,600 rpm
1,018 @ 6,700 rpm
1,019 @ 6,800 rpm
1,018 @ 6,900 rpm
1,017 @ 7,000 rpm
1,018 @ 7,100 rpm
1,014 @ 7,200 rpm

Seems like the power gets there and holds on. Both had unported 'Mafia' intake manifolds.

If these engines had a typical ported Victor manifold the HP would have been in the shitter at and beyond 7,000 rpm.

Lem Evans

Posts : 7247
Join date : 2008-12-03
Location : Livermore , Ky

View user profile http://bfevansraceparts.com

Back to top Go down

Back to top


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