Search found 550 matches

by bob460
Wed Jan 24, 2024 3:01 am
Forum: Engine Tech
Topic: Merlin Iron 310 BBc heads
Replies: 14
Views: 985

Re: Merlin Iron 310 BBc heads

Get Straub to do a custom cam for you....... :lol:
by bob460
Tue Jan 23, 2024 6:25 pm
Forum: Engine Tech
Topic: LS Valve weight VS spring pressure
Replies: 94
Views: 5329

Re: LS Valve weight VS spring pressure

In-Tech wrote: Mon Jan 22, 2024 9:10 pm Hiya,
No, ellipsoidal is dual taper and not a tree shape(tapered)
Warp has always said straight tubes is the best option.

So you would think next best if straight don't fit would be single taper followed by dual taper pushrod in the same diameter.
by bob460
Mon Jan 22, 2024 4:17 am
Forum: Engine Tech
Topic: Some updates to an Old A460 tunnel ram - R&D
Replies: 4
Views: 613

Re: Some updates to an Old A460 tunnel ram - R&D

Come to find out I didn't need all the build up on the outside (front and rear) of the plenum and made a small mess roughing it out this evening. if this bit were a tractor it would be a D11-R. This things moves some material like NOW .... https://hosting.photobucket.com/images/aa150/Sleepercp/IMG_...
by bob460
Mon Jan 22, 2024 12:46 am
Forum: Engine Tech
Topic: LS Valve weight VS spring pressure
Replies: 94
Views: 5329

Re: LS Valve weight VS spring pressure

Walter, like i said i could be wrong.....i found them max pressure's from ISKY cam's website all there Johnson lifters are rated 185/530 pressure's. I just don't see why someone would need so much seat pressure with a small, low lift 55mm hydraulic cam. MT i was referring to Walter's build with .74...
by bob460
Sun Jan 21, 2024 6:22 pm
Forum: Engine Tech
Topic: LS Valve weight VS spring pressure
Replies: 94
Views: 5329

Re: LS Valve weight VS spring pressure

I know, but the spring pressure's are rated @185 seat and 530 open pressure for this lifter, i could be wrong... #-o Where did you get those numbers ...? Certainly not from Specialty Engine Components; those who manufacture those lifters. Walter, like i said i could be wrong.....i found them max pr...
by bob460
Sat Jan 20, 2024 6:07 pm
Forum: Engine Tech
Topic: LS Valve weight VS spring pressure
Replies: 94
Views: 5329

Re: LS Valve weight VS spring pressure

BOOT wrote: Sat Jan 20, 2024 8:57 am
bob460 wrote: Sat Jan 20, 2024 1:14 am Wow didn't think johnson hydraulic roller lifters could handle that pressure of a solid roller spring..........impressive =D>
Johnson ST2126

ST=short travel
I know, but the spring pressure's are rated @185 seat and 530 open pressure for this lifter, i could be wrong... #-o
by bob460
Sat Jan 20, 2024 3:21 am
Forum: Engine Tech
Topic: 383 sbc first dyno experience
Replies: 279
Views: 897933

Re: 383 sbc first dyno experience

I'm the seeing the answer is in all of the above. A guy like Steve, who's constantly experimenting on the flow bench, is seeing an advantage (or not) when moving the rocker ratio around. That's with a given cam and an unspecified cylinder head, Unspecified in that it's constantly evolving. The rati...
by bob460
Sat Jan 20, 2024 1:14 am
Forum: Engine Tech
Topic: LS Valve weight VS spring pressure
Replies: 94
Views: 5329

Re: LS Valve weight VS spring pressure

I have mast small bore LS3 heads for my LSX, and the stainless intake valves I have for them are 126g (2.08"x 5/16“ x 5.45" length). I love these heads, but the long valves are HEAVY! How much spring pressure am I going to need, in order to control these valves at 8000rpm? Comp cams HLO S...
by bob460
Thu Dec 28, 2023 10:19 pm
Forum: Engine Tech
Topic: aluminum block and power loss?
Replies: 39
Views: 138339

Re: aluminum block and power loss?

Gary Stinnett makes the same power with iron or aluminium..........go to 20:00 min mark.

https://www.youtube.com/watch?v=vHCIfpz ... VyIGdhcnkg
by bob460
Sat Dec 23, 2023 5:20 am
Forum: Engine Tech
Topic: Work in progress: A460 Ford CNC porting project
Replies: 54
Views: 18255

Re: Work in progress: A460 Ford CNC porting project

Tunnel ram intake R&D continues: length, shapes and taper done.... next steps https://hosting.photobucket.com/images/aa150/Sleepercp/IMG_1849.jpg?width=960&height=720&fit=bounds https://hosting.photobucket.com/images/aa150/Sleepercp/IMG_1841.jpg?width=960&height=720&fit=bounds H...
by bob460
Thu Dec 21, 2023 11:15 pm
Forum: Engine Tech
Topic: Torque ft/lb per ci new benchmarks?
Replies: 159
Views: 3081645

Re: Torque ft/lb per ci new benchmarks?

Lake speed did an interview/talk with Kaase about EMC and how streetable one of them engine's are and Kaase just laughed :lol:, saying it would be a turd on the street, and that they would build it totally different for a street car. That would very much have to do with what the engine built was th...
by bob460
Thu Dec 21, 2023 11:11 pm
Forum: Engine Tech
Topic: Torque ft/lb per ci new benchmarks?
Replies: 159
Views: 3081645

Re: Torque ft/lb per ci new benchmarks?

All good!! Yes i'm from Geelong as well. Small world. Something gave me the impression you were in qld. Maybe you have seen this at local meets Yeah seen it years ago, haven't been to many car meets since covid began, alway's something comes up or shitty weather. The BP meets should be back next ye...
by bob460
Thu Dec 21, 2023 8:02 pm
Forum: Engine Tech
Topic: Torque ft/lb per ci new benchmarks?
Replies: 159
Views: 3081645

Re: Torque ft/lb per ci new benchmarks?

No man, BK race engines in NSW, sorry just seen it your from Geelong as well........lol. Didn't mean to clog up your thread, my bad. Not clogging from you at all, good contribution. My comments from the second paragraph were in general and another exchange going on, not specifically replying to you...
by bob460
Thu Dec 21, 2023 7:21 pm
Forum: Engine Tech
Topic: Torque ft/lb per ci new benchmarks?
Replies: 159
Views: 3081645

Re: Torque ft/lb per ci new benchmarks?

An engine builder down under here built a 468ci close to this engine and made 758tq that's 1.61 ft per cube and made 1068hp at 8000rpm.......this car has gone 8.44 @3,300 lb on E85...... The track is the real test and this car has proven the power on the dyno. I did start typing ‘yes, that’s the li...
by bob460
Thu Dec 21, 2023 6:07 pm
Forum: Engine Tech
Topic: Torque ft/lb per ci new benchmarks?
Replies: 159
Views: 3081645

Re: Torque ft/lb per ci new benchmarks?

The whole argument to make a supposed street engine streetable is to put a fuel with 10 points higher octane in it totally makes my argument for me. Honestly, I don’t care at this point. The EMC is cool, but it’s obvious people have hinged their entire ego on being an entrant in it, and can’t disso...