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Search found 2258 matches

by KnightEngines
Sun May 22, 2022 7:08 pm
Forum: Engine Tech
Topic: 438 23º SBC = 798hp 588tq from 6300-8000
Replies: 8
Views: 708

Re: 438 23º SBC = 798hp 588tq from 6300-8000

Yep, that'll do!
by KnightEngines
Thu May 19, 2022 4:07 am
Forum: Engine Tech
Topic: dropped base air cleaner
Replies: 30
Views: 1102

Re: dropped base air cleaner

I tested a K&N drop base with 3" element against a bare carb on a 600hp 365 cube engine a while back.
The K&N made 3hp more.
by KnightEngines
Tue May 17, 2022 3:10 am
Forum: Engine Tech
Topic: Suggestions for Running a Quiet Solid Roller Valvetrain
Replies: 26
Views: 1059

Re: Suggestions for Running a Quiet Solid Roller Valvetrain

bob460 wrote: Tue May 17, 2022 2:14 am
KnightEngines wrote: Tue May 17, 2022 12:06 am Keyway lifters will eliminate tie bar rattle - but at significant cost!
Ear plugs would be cheaper..... :lol: ......or time for a new wife... :lol:

Tony what's the cost for keyway lifters plus machine work and bushings?............i'm guessing 6-7k #-o
In Oz $ yeah, that'd be close!
by KnightEngines
Tue May 17, 2022 12:06 am
Forum: Engine Tech
Topic: Suggestions for Running a Quiet Solid Roller Valvetrain
Replies: 26
Views: 1059

Re: Suggestions for Running a Quiet Solid Roller Valvetrain

Keyway lifters will eliminate tie bar rattle - but at significant cost!
by KnightEngines
Fri May 13, 2022 10:41 am
Forum: Engine Tech
Topic: Engine Diagnosis
Replies: 39
Views: 1262

Re: Engine Diagnosis

Buggered power valve? Power valve too high? Like a 8.5 power valve with a big cam. Plug is sorted, but not wet, so it's either a weak spark (that seems to be covered) or pig rich at low load. Got a known good carb to throw on it to confirm or rule out a carb issue? The cam was 228 @ .050 and I beli...
by KnightEngines
Fri May 13, 2022 8:22 am
Forum: Engine Tech
Topic: Engine Diagnosis
Replies: 39
Views: 1262

Re: Engine Diagnosis

Buggered power valve?
Power valve too high? Like a 8.5 power valve with a big cam.

Plug is sorted, but not wet, so it's either a weak spark (that seems to be covered) or pig rich at low load.

Got a known good carb to throw on it to confirm or rule out a carb issue?
by KnightEngines
Fri May 13, 2022 3:29 am
Forum: Engine Tech
Topic: 383 sbc first dyno experience
Replies: 58
Views: 1578

Re: 383 sbc first dyno experience

Holds the power nice up top!
Good job, makes more than the sum of it's parts suggests it should.
LRE dyno is honest, she'll be quick.

Need to figure out why the vac pump dropped power tho, that's unusual, I'd normally expect 5-10hp gain on a motor like that.
by KnightEngines
Tue May 03, 2022 9:53 am
Forum: Engine Tech
Topic: Anyone know anything about these heads?
Replies: 27
Views: 1608

Re: Anyone know anything about these heads?

What would be the kind of mcsa and throat sizes for 383ci for peak torque around 4500rpm? Around 500-530hp @ 6000? 4500rpm peak tq should make peak hp at 6000 or thereabouts. A 383 at 105-110% ve should make 500-535hp. 2.1" mcsa, 87% throat on a 2.055" valve. That would do me. Not after power for t...
by KnightEngines
Tue May 03, 2022 3:43 am
Forum: Engine Tech
Topic: Anyone know anything about these heads?
Replies: 27
Views: 1608

Re: Anyone know anything about these heads?

Good starting point, not too big, not so small you gotta hog a bunch out. Use 2.055" intakes. What would be the kind of mcsa and throat sizes for 383ci for peak torque around 4500rpm? Around 500-530hp @ 6000? 4500rpm peak tq should make peak hp at 6000 or thereabouts. A 383 at 105-110% ve should ma...
by KnightEngines
Tue May 03, 2022 1:18 am
Forum: Engine Tech
Topic: Question for cam gurus
Replies: 35
Views: 1623

Re: Question for cam gurus

I would recommend a 273/283@.050", .500"/.485" Lobe Lift, 115 LSA The reason for the longer exhaust durations, is that with an over-square 2-valve engine, you don't have enough exhaust valve area, so you need to add duration to evacuate the cylinder. Yeah, this is pretty close to what I'd use, I'm ...
by KnightEngines
Mon May 02, 2022 10:01 am
Forum: Engine Tech
Topic: Anyone know anything about these heads?
Replies: 27
Views: 1608

Re: Anyone know anything about these heads?

Good starting point, not too big, not so small you gotta hog a bunch out.
Use 2.055" intakes.
by KnightEngines
Sun May 01, 2022 9:53 am
Forum: Engine Tech
Topic: Anyone here running a solid lift roller cam on a street car?
Replies: 37
Views: 1611

Re: Anyone here running a solid lift roller cam on a street car?

Fine, use good lifters & check lash every 1000ks, if they start to open up replace the lifters. Stick with street roller lobes with needle roller lifters. If you use bushed or DLC you can use endurance racing lobes. Keep the idle speed up (1200-1400rpm) to keep oil moving, use quality oil & delete ...
by KnightEngines
Thu Apr 28, 2022 12:29 am
Forum: Engine Tech
Topic: Cartridge roll’s
Replies: 20
Views: 662

Re: Cartridge roll’s

While everyone with the expertise is here, I've a quick question regarding what cartridge roll to use. I've a cast iron head (RHS SBC) and there are some very abrupt edges in the chamber from some previous work. Mostly from a cutter that was used to take a few cc's from around the valves. What grit...
by KnightEngines
Wed Apr 27, 2022 9:34 am
Forum: Engine Tech
Topic: Cartridge roll’s
Replies: 20
Views: 662

Re: Cartridge roll’s

I use the standard abrasives ones, all the others I've tried either come apart, go 'blunt' & stop cutting or wear out real fast.
The SA ones are pretty good.
by KnightEngines
Mon Apr 25, 2022 7:16 pm
Forum: Engine Tech
Topic: What's the new opinion on rev kits with hyd retrofit cams?
Replies: 5
Views: 430

Re: What's the new opinion on rev kits with hyd retrofit cams?

Pointless on a hyd roller.
The big benefit is that it keeps the wheel in contact with the lobe on the base circle which significantly reduces shock & wheel acceleration on the opening ramp.
But hyd is always in contact with the lobe anyway.