Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - blykins

Pages: 1 ... 3 4 [5] 6 7 ... 321
61
FE Technical Forum / Re: Comp 938-16 springs
« on: January 16, 2024, 08:52:41 AM »
You’d have to measure one and see where it binds up at.  200 lbs seat and 515 at .650” lift is what’s advertised.

Too much, IMO, for a flat tappet and tool steel lifters.  Would work for a steel cam and DLC coated tool steel lifters though.

62
FE Technical Forum / Re: pushrod length
« on: January 14, 2024, 01:37:41 PM »
Yes and a steel distributor gear.  I'd also recommend a steel thrust plate.

63
FE Technical Forum / Re: Cam retaining plate bolt question
« on: January 13, 2024, 08:58:12 PM »
If you run a flat tappet, then a stock thrust plate is all that’s needed.

On roller cams that are steel, I feel it’s best to match the material, with the cam, cam gear, and thrust plate. 

64
FE Technical Forum / Re: Cam retaining plate bolt question
« on: January 13, 2024, 02:23:51 PM »
No need to get fancy with any of it.  Most bolts will clear the timing sets I use (mainly Cloyes).  Before Doug at POP started offering bolts, I would just buy a high quantity of 7/16-14 x 3/4 bolts from McMaster/Fastenal or use the ones that come in the Durabond engine finishing kits, then cut them down to 5/8".  Never had a problem.  Doug's bolts are made by ARP for T&D and they're already the right length, so I just have Doug send me a hand-full every now and again.

Not a fan of reusing the factory ones.  By the time I get them, they've been removed/installed 17 times and look like someone with a small screwdriver and channel locks tried to get them out.  I use mainly steel thrust plates, cam gears, and cams, so the new fastener "looks" correct. 

An unplated 7/16-14 Grade 5 fastener torques at 50-55 according to the charts and I'd rather not rely on threadlocker to hold it all in there, I'd rather stretch that bolt accordingly.  I personally just don't like the feel of trying to torque something with a Phillips (or PosiDrv) head.

65
FE Technical Forum / Re: ARP lube, anti seize, loctite
« on: January 13, 2024, 06:07:01 AM »
A lot of your higher end rods use CMD.   I keep a big tube of it here.   There's another lubricant that I can't remember the name of, but it's almost like a robin-egg blue color.   Whatever it is, I've used it a few times and it gives good results as well and it feels similar to the CMD. 

Yes, you want the fastener's head to turn easily, not the washer to turn on the surface of the part. 

As long as we're adding tips, some of the ARP washers have chamfers on one side.  The chamfer always goes up toward the head of the bolt. 

66
FE Technical Forum / Re: ARP lube, anti seize, loctite
« on: January 12, 2024, 04:38:37 PM »
For cam retainer plate and oil pump, I use Loctite.

On all other fasteners going into aluminum, I’ll use motor oil, assembly grease, anything to keep it from galling.

67
FE Technical Forum / Re: Cam retaining plate bolt question
« on: January 12, 2024, 01:37:20 PM »
Check the length and make sure it doesn't block off the oil passage inside that bolt hole.  If it does, oil to the distributor shaft/gear will be necked off.

I usually torque mine to 55 with blue Loctite, but it looks like a little lower has worked for guys too. 

68
FE Technical Forum / Re: pushrod length
« on: January 12, 2024, 01:07:20 PM »
Always.  Lifters are a lot taller on a roller.

69
FE Technical Forum / Re: Cam retaining plate bolt question
« on: January 12, 2024, 01:06:51 PM »
A thrust plate bolt should be a 7/16-14.  A good length is 5/8", as it won't occlude the feed hole to the distributor gear.

70
FE Technical Forum / Re: cam bearing clearance
« on: January 12, 2024, 05:41:28 AM »
It gave me a mental picture of the pics you shared recently of your first engine build you looked pretty young  ;)

Yeah, I still make mistakes when I'm old.  That's why I'm as bald as a cue ball.

That fiasco opened my eyes up a little bit.  When you can pull an engine on the dyno to 5500 with .012" (twelve!!!) main bearing clearance, all these guys screaming on the internet, "DON'T NICK A CAM BEARING YOU WILL LOSE ALL YOUR OIL PRESSURE" get a chuckle from me. 

That's why I said an extra .002" cam bearing clearance on one journal for the OP won't hurt anything.

I pulled all the caps off of that engine after I found the leak.  All the crank journals looked perfect, bearings looked perfect, etc.  I pulled the crank out, swapped in new bearings, bore gauged the clearances, put it back together, and dyno'd it again. 

It had been a perfect storm for mistakes.  Either someone had mispackaged a set of bearings, or I had put a set of standard bearings in a .010" box at some point.  In addition, my Mitutoyo bore gauge only goes to .005".  So a multiple of 5 is kinda undetectable. 

Things shape your experience and "rules" over time.  This is one of the reasons why I tell everyone to spin the pump on the stand, listen for odd noises, and know that certain pumps will pretty much always make the same oil pressure on the gauge with the same drill motor spinning it.  Looking back at it, it had "enough" on the gauge, but it didn't have what it should have had.

71
FE Technical Forum / Re: Fabricated Aluminum Valve Covers
« on: January 11, 2024, 02:36:34 PM »
Nice lookin' engine.

72
FE Technical Forum / Re: Fabricated Aluminum Valve Covers
« on: January 11, 2024, 08:27:49 AM »
Gotta watch, because some of them are short and/or won't fit a decent rocker arm.  Some of them kinda look like a SBF valve cover the way they're shaped and they don't fit well.

The Moroso ones are expensive, but they are nicely made and will cover pretty much anything.






73
FE Technical Forum / Re: cam bearing clearance
« on: January 11, 2024, 04:50:35 AM »
Several years.  Why do you ask?

74
FE Technical Forum / Re: Ford Adjustable Rockers
« on: January 10, 2024, 04:11:55 PM »
I have ran factory rockers at .660" lift and 425 lbs of spring load.   That was with a rules road race engine with REM/cryo rockers. 

No way I'd ever associate a factory rocker with a solid roller.   

75
FE Technical Forum / Re: cam bearing clearance
« on: January 10, 2024, 12:49:04 PM »
I usually see .003-.005" normally. 

I don't think .007" will hurt you, especially just on one journal. 

Somebody, who shall remain nameless, but his initials are Brent Lykins once put a 390 together with a .010"/.010" crank and standard main bearings.  It had like .012" main bearing clearance.  Oil pressure at idle was good, it had 70 psi at full pull on the dyno, but after a pull, it would go to single digits.  That's how I knew something was wrong.  Tried a different pump on the dyno, same deal.  Tried different viscosity oil, same deal. 

Took it home, pulled the pan, hooked up a special pump with a hose fitting and then primed the pump while I watched from underneath.  Looked like Niagara Falls. 

On a cam bearing, I'd rather have more than not enough.  I'm real particular on my engines with very high spring loads about the cam bearing clearance. 

Pages: 1 ... 3 4 [5] 6 7 ... 321