Search found 558 matches

by bob460
Sun Oct 27, 2019 8:04 pm
Forum: Engine Tech
Topic: Bushed roller Lifter and roller cam Bearings
Replies: 7
Views: 1256

Re: Bushed roller Lifter and roller cam Bearings

Arguments both ways on roller cam bearings vs. babbit, but I run them in my junk. As to the lifters, bigger lifter means bigger wheel and slower wheel speed. Both pluses. Biggest question I'd have is do you have enough material around the lifter bores to accept the bushings? You said 409, so I'm as...
by bob460
Mon Oct 21, 2019 11:24 pm
Forum: Engine Tech
Topic: 1575 valvesprings
Replies: 4
Views: 696

Re: 1575 valvesprings

I wonder why they don't have it on the PAC web site.

They have 2 1500's but they have been discontinued.

I say stick with the PSI springs, as warpspeed said there the best.
by bob460
Mon Oct 21, 2019 8:38 pm
Forum: Engine Tech
Topic: 1575 valvesprings
Replies: 4
Views: 696

Re: 1575 valvesprings

I can't even find that part #1575 on the PAC site!!
by bob460
Thu Oct 17, 2019 8:05 pm
Forum: Engine Tech
Topic: Comp Cams Dual Conical SR Valve Springs
Replies: 23
Views: 3851

Re: Comp Cams Dual Conical SR Valve Springs

I think you would be better off with a smaller diameter PSI springs That spring is 1.442" at the top, and 1.657" at the bottom. It's 150 @2.00", 630 @1.200", and a 1.115" Coilbind You'd be better off, going with a spring that gets the overall weight of the spring down. PSI ...
by bob460
Thu Oct 17, 2019 12:01 am
Forum: Engine Tech
Topic: Comp Cams Dual Conical SR Valve Springs
Replies: 23
Views: 3851

Re: Comp Cams Dual Conical SR Valve Springs

Good for 10,000 rpm on ls ......wow............tested by EFI University. =D>
by bob460
Wed Oct 09, 2019 7:51 am
Forum: Engine Tech
Topic: Artificial Intelligence to Design Lightweight Parts
Replies: 55
Views: 6707

Re: Artificial Intelligence to Design Lightweight Parts

Cool stuff...........i like it!!

Good job SchmidtMotorWorks.
by bob460
Wed Oct 09, 2019 7:44 am
Forum: Engine Tech
Topic: EMC 289
Replies: 65
Views: 9060

Re: EMC 289

Nice build and congrats!! =D>

Would make a nice engine in our XR GT FALCONS down under!

Interesting on the hydraulic roller cam with solid lifters...........how reliable would it be in a street car?

Would you add more exhaust duration if you made a cam change?......if so how much more?
by bob460
Tue Oct 08, 2019 8:24 am
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 5268

Re: engine masters live feed?

Hey Bob, no i havnt, do you have a link. Was it a typical stroker 351 or a 400 block? Im guessing stroker? [/quote][/quote] Using a factory 2 bolt pillow clevo block with factory cast iron heads,flat tappet cam just made an impressive 603 ft lbs and 759 hp on pump gas https://www.facebook.com/jason...
by bob460
Mon Oct 07, 2019 11:12 pm
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 5268

Re: engine masters live feed?

Thanks, Walter. Good thing I wasn't handicapping this like a horse race; I'd lost big bucks. Who'da thunk a Ford FE would win it and Kaase's BBC would be behind the FE and a SBF? And there's a BBF 385 scoring lower than a Y-block and two FEs. And what's with not a single BBM or SBM competing? No Ol...
by bob460
Mon Oct 07, 2019 10:08 pm
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 5268

Re: engine masters live feed?

What was the issue with Kaase's engine? There were no issues that anyone could see ... simply not a high enough score. It said on the hotrod site he was down 60-70hp down from pre contest testing.........just curious if something went a miss. I like those Jesel rockers he had on the BBC.......also ...
by bob460
Sun Oct 06, 2019 9:28 pm
Forum: Engine Tech
Topic: Camshaft duration vs valve events vs RPM
Replies: 27
Views: 3910

Re: Camshaft duration vs valve events vs RPM

WPH wrote: Fri Oct 04, 2019 5:44 pm What if you saw the worst valve train deflection ever and a loss of net valve lift how would you treat the situation?

-wph-
Call Tom at 3V PERFORMANCE! :wink:
by bob460
Sun Oct 06, 2019 7:41 pm
Forum: Engine Tech
Topic: engine masters live feed?
Replies: 45
Views: 5268

Re: engine masters live feed?

What was the issue with Kaase's engine?
by bob460
Mon Sep 30, 2019 9:43 pm
Forum: Engine Tech
Topic: 904 (903) Mech lifters and various wheel size
Replies: 4
Views: 835

Re: 904 (903) Mech lifters and various wheel size

You need to check, to see what size roller follower, those profiles were designed for. If they're designed for a .750" diameter, and you put a .820" roller on it, the acceleration rate(off the seat, and back on the seat) will be increased. This could cause increased pushrod flex and/or pr...
by bob460
Sat Sep 28, 2019 10:33 am
Forum: Engine Tech
Topic: Service Life of Steel H-Beam Rods
Replies: 31
Views: 3478

Re: Service Life of Steel H-Beam Rods

Coloradoracer wrote: Sat Sep 28, 2019 10:19 am
bob460 wrote: Sat Sep 28, 2019 10:11 am What cid is it? and what rpm you turning ?
Me? Last engine with those rods was a 604" 12* BBC. Turned about 8200 on the top end
No the OP my bad, but how many runs did you put on your rods?