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Search found 829 matches

by n2omike
Wed Oct 20, 2021 10:54 am
Forum: Engine Tech
Topic: Help me pick a new cam
Replies: 4
Views: 135

Re: Help me pick a new cam

Blueprint has a crate hydraulic roller 632 that is similar to yours. It makes 830 hp and doesn't need to spin to the moon to do it. A friend of mine has one. Peaks around 6300 rpm. If it's a street car with street tires, you're not going to be able to actually use too much bottom end power, as it's ...
by n2omike
Mon Oct 18, 2021 10:27 am
Forum: Engine Tech
Topic: Shiny or black carb for heat
Replies: 36
Views: 1103

Re: Shiny or black carb for heat

Black is the best at absorbing heat. Black is also the best at radiating it. (Look up blackbody radiator) That being said, it's not that simple. Will a layer of black paint insulate the object better than the black color radiates? lol Plus, there are a LOT of heat sources under the hood of a car. He...
by n2omike
Mon Oct 18, 2021 8:56 am
Forum: Engine Tech
Topic: Annular boosters for a QF 750 DP
Replies: 17
Views: 564

Re: Annular boosters for a QF 750 DP

levisnteeshirt wrote: Sun Oct 17, 2021 10:17 pm How many emulsion hole blocks ?
They are billet AED blocks, and there were a lot of emulsion bleeds... at least 5, maybe 6 or 7? I didn't count.
by n2omike
Fri Oct 15, 2021 11:36 am
Forum: Engine Tech
Topic: Annular boosters for a QF 750 DP
Replies: 17
Views: 564

Re: Annular boosters for a QF 750 DP

I ordered a custom carb from AED for my 363. It went to a Stuska dyno last weekend and made 611 hp at 7500 rpm, and carried to 8k. The carb has a huge 850 sized Holley center section and annular boosters. It was WAY rich out of the box, and we ended up going down six jet sizes. Ended up with 78/85 j...
by n2omike
Thu Oct 14, 2021 3:20 pm
Forum: Engine Tech
Topic: What's a good CDI box value these days?
Replies: 48
Views: 2143

Re: What's a good CDI box value these days?

In fact, look at older in-cockpit video and see how the ignition TRAY (typically atop Dash but some on tunnel) has TWO ANALOG CD BOXES in Tray. TWO Coils usually in Tray as well, but sometimes clamped to the chassis' Petty bar. A-B switch on Dash. Two Hi-tension coil wires pass thru firewall... I'm...
by n2omike
Thu Oct 14, 2021 12:05 pm
Forum: Engine Tech
Topic: What's a good CDI box value these days?
Replies: 48
Views: 2143

Re: What's a good CDI box value these days?

Back when NASCAR CUP, XFINITY, TRUCK ran carbs & distributors: their analog MSD CD boxes (e.g. 6TN / 6ALN or Crane) were ALWAYS mounted in Pairs. A-B switchable. With separate coils dedicated to each box. Distributors had TWO pickups; also A-B switchable. Unreliability was & is a given. Older 6AL b...
by n2omike
Wed Oct 13, 2021 10:40 am
Forum: Engine Tech
Topic: What's a good CDI box value these days?
Replies: 48
Views: 2143

Re: What's a good CDI box value these days?

I have three of the old MSD 6AL boxes that I purchased in the 1990's that still work perfect. All is see is problems with the newer stuff. Seems like people go through multiple digital boxes and have constant problems. As long as the old stuff works for me, that's what I'll continue to use.
by n2omike
Wed Oct 13, 2021 10:28 am
Forum: Engine Tech
Topic: What distributor gear are you guys using for billet cams?
Replies: 18
Views: 1222

Re: What distributor gear are you guys using for billet cams?

SOME billet cores can use a Melonized Steel gear... and some cannot. I believe people have good luck with the 8620 cores (copper colored between the lobes) but not the 5160, etc. They either need to have a special gear pressed on, or use a bronze gear. I bought a cam from Mike Jones when cores were ...
by n2omike
Tue Sep 07, 2021 1:00 pm
Forum: Engine Tech
Topic: The first exhaust collector in 4-2-1
Replies: 18
Views: 1943

Re: The first exhaust collector in 4-2-1

4-2-1 and 'choke' collectors both work on the same principal... and some people overthink or underthink it. They both remove excess 'dead' area from the exhaust. 4-2-1 relies on firing order. They pair cylinders that fire as far away from each other in the firing order as possible. That way both pul...
by n2omike
Tue Sep 07, 2021 12:17 pm
Forum: Engine Tech
Topic: X pipes???
Replies: 16
Views: 1530

Re: X pipes???

You can get HORRENDOUS results with a bad x-pipe. Some muffler shops (and individuals) will simply cut a hole in one pipe and run a second pipe through that hole. This cuts the area IN HALF in the best case scenario, killing power like adding a cork. In many scenarios, the hole is not cut well, and ...
by n2omike
Tue Sep 07, 2021 12:07 pm
Forum: Engine Tech
Topic: Selecting Valve Seat material for Ti Valves
Replies: 20
Views: 1639

Re: Selecting Valve Seat material for Ti Valves

NOT an expert in the field of titanium... That being said, I have noticed a lot of different seats being used. I did stay at a Holiday Inn last night, and watched a video of Matt at MBE describing various seats that people use with Ti. Of course he said most are total crap, and the only ones that wo...
by n2omike
Wed Jun 30, 2021 8:41 pm
Forum: Engine Tech
Topic: Oil Ring Insanity
Replies: 7
Views: 495

Re: Oil Ring Insanity

They're all done, installed and rod bolts torqued. Wow, this short block doesn't take much force at all to rotate. Digital torque wrench varied between 10-15 ft-lbs as it goes through its rotation... and these are the older Mahle pistons with the 1.5/1.5/3.0 ring package. The new ones come with 1.0/...
by n2omike
Wed Jun 30, 2021 4:23 pm
Forum: Engine Tech
Topic: Oil Ring Insanity
Replies: 7
Views: 495

Re: Oil Ring Insanity

I've got a system now. It's slow, but it seems to work. Install support rail and expander. As Brent said, hold the expander butted while the rails are installed. This can take a couple trials, as the expander comes completely out of the groove while installing the oil ring rails. The oil rail is als...
by n2omike
Wed Jun 30, 2021 2:39 pm
Forum: Engine Tech
Topic: Oil Ring Insanity
Replies: 7
Views: 495

Re: Oil Ring Insanity

My advice for these (so far) is to install the oil ring only, then carefully use a tapered ring compressor on the bench to get the oil rings to take a 'set' in the compressor. You can use a pick to guide the rails from underneath. Once it is all correct inside the compressor, you can remove, install...
by n2omike
Wed Jun 30, 2021 12:47 pm
Forum: Engine Tech
Topic: Break in oil magic
Replies: 92
Views: 4990

Re: Break in oil magic

Was the information in these links 'bad'? Seemed to make sense, and there are several companies making oil specifically for break-in. Plus, that break-in oil is fairly inexpensive, so I see it as cheap insurance. I've used the Joe Gibbs BR40 successfully... in flat tappet builds. Anything that can h...