Page 1 of 2 1 2 >
Topic Options
#2461789 - 03/05/18 09:38 PM Bushed lifter bore question
varunner Offline
mopar

Registered: 06/28/06
Posts: 409
Loc: Virginia
In a BB, how are solid lifters lubricated when the bores are bushed ?

Top
#2461808 - 03/05/18 10:03 PM Re: Bushed lifter bore question [Re: varunner]
dvw Offline
master

Registered: 03/16/06
Posts: 7292
Loc: MI, usa
Drill a small hole in the bushing.
Doug

Top
#2461812 - 03/05/18 10:07 PM Re: Bushed lifter bore question [Re: varunner]
varunner Offline
mopar

Registered: 06/28/06
Posts: 409
Loc: Virginia
If they're already installed, is splash enough ?

Top
#2461814 - 03/05/18 10:09 PM Re: Bushed lifter bore question [Re: varunner]
Chargerfan68 Offline
super stock

Registered: 10/28/06
Posts: 714
Loc: New York, USA
As doug said, i had my machinist put .030” holes on the bushings for a little oiling. But mine is a race application only, so it mostly gets splash oiling. I would never depend on only a .030” hole for any street application , but thats just me. I could barely see tha .030” holes. I actually thought he forgot to drill them until i looked real good for them. Thats how small they are.
_________________________
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.

Top
#2461815 - 03/05/18 10:11 PM Re: Bushed lifter bore question [Re: varunner]
Chargerfan68 Offline
super stock

Registered: 10/28/06
Posts: 714
Loc: New York, USA
Is it only race? Any street or extented idling at all?


Edited by Chargerfan68 (03/05/18 10:11 PM)
_________________________
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.

Top
#2461873 - 03/06/18 12:34 AM Re: Bushed lifter bore question [Re: varunner]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31675
Loc: Bend,OR USA
Originally Posted By varunner
In a BB, how are solid lifters lubricated when the bores are bushed ?
Solid lifters or solid roller lifters?
If solid roller they should have a oil hole in the oil gallery into the bushing, .030 to .090 depending on the shop doing the work shruggy If not rollers no need for any other oiling twocents
I need to go pickup my 400 block now after having bushings installed in it to seal the oil galleys up at max lift with the Comp Cams solid roller lifters set up for pushrod oiling, that shop put a .060 oil hole in the bushings up I had assembled the motor and primed it and found out it only had 20 Lbs. of oil pressure with the comp lifters, I swapped them to a set of regular Cranes solid rollers I had in the cabinet and had zero oil pressure with them shock whiney
This motor has a set of Jesel paired shaft rockers hence the need for pushrod oiling shruggy
Onwards and upwards wrench grin


Edited by Cab_Burge (03/06/18 12:35 AM)
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Top
#2461903 - 03/06/18 06:57 AM Re: Bushed lifter bore question [Re: varunner]
varunner Offline
mopar

Registered: 06/28/06
Posts: 409
Loc: Virginia
These are solid lifters, race only. I gave them a lifter dia. to hone to, I'm going to measure the bores and I hope I have at least .0015" clearance, .002" would be better.

sounds like you're having fun Cab.

thanks

Top
#2461915 - 03/06/18 07:48 AM Re: Bushed lifter bore question [Re: varunner]
SILVER67 Offline
super stock

Registered: 02/04/06
Posts: 766
Loc: Liverpool, NY
My 505 is bushed with BHJ bushings and was honed to size for the Comp-AMC EDM lifters.
I did nitride the cam as well.
Think like a .030 hole to lube the lifter.

It's been running since 2012 with a .600 flat tappet since then.

I have over 5,000 street miles, highway, idling in 90*+ weather.
I weekly bracket race with it as well.
And something around 100 passes going 11.'0s @ 120-121

Have fun !
_________________________
Competition Wedge Engines Brewerton, NY

Top
#2461994 - 03/06/18 10:58 AM Re: Bushed lifter bore question [Re: varunner]
RobR Offline


Registered: 01/20/03
Posts: 2883
Loc: Canada
I've been bushing blocks since the early 80's..BHJ fixture..I run cast bushings and I've used splash only on the street and also a .030 to .050 hole no real difference in wear with the cast..
In the late 70's I tried bronze for the half dozen or so engines with splash only and when it came to freshen there were some that needed to be replaced..
Mickey at BHJ told me to try his cast bushings and I've never used bronze after that...very good service life with cast on the street..
_________________________
http://www.youtube.com/watch?v=YilvlLxgv9U

Top
#2462008 - 03/06/18 11:27 AM Re: Bushed lifter bore question [Re: varunner]
varunner Offline
mopar

Registered: 06/28/06
Posts: 409
Loc: Virginia
I wonder why a cast bushing would be recommended. cheaper ? doesn't matter anyway, if it works, you're good. proper clearance is probably the main thing. thanks all

Top
#2462031 - 03/06/18 12:31 PM Re: Bushed lifter bore question [Re: RobR]
CompWedgeEngines Offline
master

Registered: 11/03/04
Posts: 3477
Loc: Syracuse,NY
Originally Posted By RobR
I've been bushing blocks since the early 80's..BHJ fixture..I run cast bushings and I've used splash only on the street and also a .030 to .050 hole no real difference in wear with the cast..
In the late 70's I tried bronze for the half dozen or so engines with splash only and when it came to freshen there were some that needed to be replaced..
Mickey at BHJ told me to try his cast bushings and I've never used bronze after that...very good service life with cast on the street..



I switched bronze bushing manufacturers, ( got away from BHJ) and they look much much better long term, and hone nicer. Just my experience.
_________________________
RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.

Top
#2462038 - 03/06/18 12:49 PM Re: Bushed lifter bore question [Re: varunner]
CMcAllister Offline
master

Registered: 12/30/05
Posts: 2613
Loc: Fulton County, PA
With the amount of oil being slung around in an engine, I wouldn't add 16 .030 oil leaks unless I had pushrods oiling the top end. .030 is a huge hole when there's 60 or 70 PSI behind it. I oiled a complete top end with bushed rockers at 7400 through a .045 jet with a minimum amount of wear showing. Bushed lifter bores and oil to the cam bearings restricted as well. Hundreds of runs at 7400. My goal was to minimize the amount of oil flying around doing nothing but getting aerated and get it onto the crank.

Top
#2462689 - 03/07/18 02:40 PM Re: Bushed lifter bore question [Re: varunner]
dogdays Offline
I Live Here

Registered: 01/20/03
Posts: 16270
IF you're talking about CAST IRON then the answer is simple. The carbon flakes in the cast iron provide some lubrication.

However, just about any metal and most ceramics can be cast so it's just an assumption that you're talking about cast iron.

R.

Top
#2462736 - 03/07/18 04:33 PM Re: Bushed lifter bore question [Re: dogdays]
BradH Online   content
I Live Here

Registered: 01/30/03
Posts: 14236
Loc: Valhalla... eventually
I ran undrilled bronze bushings on the street w/ solid flat-tappet lifters and saw definite wear patterns and extra clearance in the bushings. The late Dan Costello lent me a fixture to add holes to them, so I added .125" holes before I switched to solid roller lifters.

Everyone who hears the size of those holes always acts shocked and tells me they're way too big. Well, they're a He11uva lot smaller than the size of the galley opening in an unbushed lifter bore, and the engine had no oil pressure issues on the dyno either at idle or WOT up to 7200 RPM.

Top
#2462751 - 03/07/18 04:59 PM Re: Bushed lifter bore question [Re: varunner]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11473
Loc: So. Burlington, Vt.
Solid flat tappets in a race only application?

If the clearance is right....... You're good without the holes.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top
#2462838 - 03/07/18 07:39 PM Re: Bushed lifter bore question [Re: dogdays]
The Shadow Offline


Registered: 09/25/03
Posts: 2124
Loc: Duloc
Originally Posted By dogdays
IF you're talking about CAST IRON then the answer is simple. The carbon flakes in the cast iron provide some lubrication.



R.

I think you mean graphite flakes not carbon

Top
#2463101 - 03/08/18 11:32 AM Re: Bushed lifter bore question [Re: BradH]
CMcAllister Offline
master

Registered: 12/30/05
Posts: 2613
Loc: Fulton County, PA
Originally Posted By BradH

Everyone who hears the size of those holes always acts shocked and tells me they're way too big. Well, they're a He11uva lot smaller than the size of the galley opening in an unbushed lifter bore, and the engine had no oil pressure issues on the dyno either at idle or WOT up to 7200 RPM.


One of the reasons for bushings is to eliminate those huge oil leaks. I didn't have oil pressure issues either, looking at the gauge. But my rod bearings sure appreciated it when I started fixing the internal leaks.

Top
#2463284 - 03/08/18 04:44 PM Re: Bushed lifter bore question [Re: CMcAllister]
BradH Online   content
I Live Here

Registered: 01/30/03
Posts: 14236
Loc: Valhalla... eventually
I understood the oil control benefits. My concern was the bushing wear from street use w/ splash-only lubrication. If I bush my other block (and I'd like to), I won't go as big on the oil feed holes... probably .060".

Top
#2463486 - 03/08/18 09:49 PM Re: Bushed lifter bore question [Re: BradH]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31675
Loc: Bend,OR USA
I picked up my 400 block from the machine shop in Vancouver, WA this afternoon, they put lifter bushings in it with .060 holes in them ,according to them work It is to late to unload it tonight due to cold, ice in the drive way and my old cautious age grin
I'll unload it tomorrow morning and get it into the assembly room and take a good hard look at it after cleaning it thoroughly and putting it on a engine stand, again.
Hopefully the low oil pressure issue is gone and it lubricates through the pushrods properly with better oil pressure luck
More info on this later when I'm done thumbs
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Top
#2463809 - 03/09/18 12:48 PM Re: Bushed lifter bore question [Re: varunner]
Locomotion Offline
master

Registered: 01/19/03
Posts: 5571
Loc: Florida
If I remember correctly, the Direct Connection oil galley tube kit for a small block didn't say anything about holes for added oiling. Just peening the tube in each lifter bore on one side. Apparently with solid lifters, there is enough "splash" to provide enough lube. (I did it once - never again!)

Cam/lifter lubrication would be my biggest concern. But a little bit more through a small lube hole couldn't hurt with a flat tappet.

Top
Page 1 of 2 1 2 >

Advertisement
Forum Stats
25,624 Registered Members
32 Forums
195,533 Topics
2,287,292 Posts

Most users ever online: 1,424 @ 06/20/18 07:18 PM
Moparts Newest Topics
ABC MOPARTS Dash pads???
by Highwaystar2
12/11/18 03:46 PM
Bloodhound supersonic project scrapped
by theraif
12/11/18 03:46 PM
wonder what the cost is from start to finish
by theraif
12/11/18 03:43 PM
Gremmy to ya!
by RoadRunnerLuva
12/11/18 03:15 PM