HPRE

Menu

Members Rides

Silver wolf


in
Members Rides

Welcome, Guest. Please login or register.
Did you miss your activation email?
November 23, 2014, 02:40:19 PM

Login with username, password and session length

 

Author Topic: ACE Is Assisting With Bulldog Customs Twin - PROJECT ABORTED  (Read 6388 times)

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
I would run TM32.
The port is 1.25" (31.75mm)and it flows 160 cfm, and the TM32  will flow more than that, and be responsive. It flows enough to feed a Fireball 535, and you will have one for each cylinder. I am assuming you will run twin carbs.
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
Yes 2 carbs.  Thanks.   :)
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
Today, the plastic rapid-prototype rockers for the Chief heads came in to Mondello's from the rocker company.

This is for a try/fit to be sure that everything fits right, and the geometry is good.

Once that is verified, then they will make them in steel.

These will be steel roller rockers with 1.5:1 ratio, which will ride on the standard rocker shafts, and work with our hi-lift valve/spring kit to achieve approximately .520" max lift.
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
Awesome!  Very exciting!  So they were able to make the rockers a full 1.5:1 ratio?  Last we spoke we were talking 1.45:1 ratio.  Very excited to hear how they fit and work.   ;D

Scottie J
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
Awesome!  Very exciting!  So they were able to make the rockers a full 1.5:1 ratio?  Last we spoke we were talking 1.45:1 ratio.  Very excited to hear how they fit and work.   ;D

Scottie J

We're seeing how much we can fit in.
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
We're seeing how much we can fit in.

That's what I'm talking about.   :D
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
So, Tom...  Have you come up with a name for the Twin treatment?     :)
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

Mr.Mazza

  • Grand Gearhead
  • *****
  • Posts: 566
  • Karma: 0
  • Upside down thumping
So, Tom...  Have you come up with a name for the Twin treatment?     :)

British twins headjob? ;)
Lizzy - 07 500 Deluxe ES - Red and chrome

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
So, Tom...  Have you come up with a name for the Twin treatment?     :)

I have a few ideas for a name.
"Bonneville" heads, based on the LSR goal for the build.
"Rock N Roller" heads, based on the roller rocker set-up.
"Pair of Aces" heads, based on the twin format.
"Ace/Mondello GP" heads, like we call our single versions of this layout.

Anyway, regarding your exhaust system, I did a few calculations, and it looks like you want to have primary pipe lengths of 30" each, measured from the back of the exhaust valve, to the end of the pipe, so you have to add whatever that exhaust port length is to the length of the pipe, and that would be your 30".
And the I.D. of the primary header pipes should be 1.5" because you are supercharging, and that needs extra room in the exhaust. That 1.5" figure is based on 150% volumetric efficiency, which is about what I figure that boost will be giving it. For N/A application the 1.375" I.D. would work fine.

And some other calcs I did on the intake side show it should support up to 8250 rpm with this port size in N/A format, and should be able to do even more with boost, if more is wanted. That's based on the 3.66" stroke crank from the Interceptor, because I think that's what you'll be using, right? If you use the 3.54" stroke, it will support revs even higher than that.
« Last Edit: June 04, 2014, 02:29:05 PM by ace.cafe »
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
I have a few ideas for a name.
"Bonneville" heads, based on the LSR goal for the build.
"Rock N Roller" heads, based on the roller rocker set-up.
"Pair of Aces" heads, based on the twin format.
"Ace/Mondello GP" heads, like we call our single versions of this layout.

Anyway, regarding your exhaust system, I did a few calculations, and it looks like you want to have primary pipe lengths of 30" each, measured from the back of the exhaust valve, to the end of the pipe, so you have to add whatever that exhaust port length is to the length of the pipe, and that would be your 30".
And the I.D. of the primary header pipes should be 1.5" because you are supercharging, and that needs extra room in the exhaust. That 1.5" figure is based on 150% volumetric efficiency, which is about what I figure that boost will be giving it. For N/A application the 1.375" I.D. would work fine.

And some other calcs I did on the intake side show it should support up to 8250 rpm with this port size in N/A format, and should be able to do even more with boost, if more is wanted. That's based on the 3.66" stroke crank from the Interceptor, because I think that's what you'll be using, right? If you use the 3.54" stroke, it will support revs even higher than that.



How about combining #2 and #3 and calling them the Rocking Aces?!  :D

And I'll be using the 90mm/3.54" stroke crank.  Are you telling me I'll be able to hit 9000 RPMs NA?!   :o

Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
I'll say that the flow should be able get to 8500+ rpm with the blower

The bottom parts might be some other story
« Last Edit: June 05, 2014, 03:16:06 AM by ace.cafe »
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
That's where the custom steel H-beam rods and having the crank plasma nitrided comes into play.  Right?!   ;)
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
That's where the custom steel H-beam rods and having the crank plasma nitrided comes into play.  Right?!   ;)

It "should".
Whether it actually will has yet to be seen.
If that crank is cast, then getting up to 9000 is about the limits of a cast crank, no matter what you do to it. If it is forged steel, then it could go higher.

The ports can do 8250 in N/A format before getting into choking. With the blower, the temps are higher, and compressibility is involved, so this has the effect of raising the choke limit speed(mach index).


Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

ace.cafe

  • Grand Gearhead
  • *****
  • Posts: 8670
  • Karma: 0
  • World leaders in racing or performance Bullets
Took a pic of the rocker proto when I went to mondello's this morning.
Home of the ACE Fireball 535 Bullet,  Ace GP Hi-Lift Roller Rocker Head . Pistons, cams, etc. Highest performance Bullet engine mods available .  AVL mods. Redditch 700/750 Twin mods. UCE kit soon.

Please visit my new website:
http://groups.yahoo.com/neo/groups/AcePerformanceBullets/info

High On Octane

  • Grand Gearhead
  • *****
  • Posts: 4150
  • Karma: 0
  • Go Fast & Look Good Doing It
Freaking sick!   ;D   ;D   ;D
Scottie J
Denver, CO

1958 Enfield/Indian Trailblazer