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Search found 2684 matches

by pamotorman
Wed Aug 12, 2020 11:26 am
Forum: Engine Tech
Topic: Bronze pin bushing vs. no pin bushing
Replies: 25
Views: 6609

Re: Bronze pin bushing vs. no pin bushing

i used steel on steel at ,001 clearance but i used molykote as a lube on assy with a oil hole in the top with no problems.
by pamotorman
Sat Aug 08, 2020 2:02 pm
Forum: Engine Tech
Topic: How to groove a main bearing
Replies: 22
Views: 908

Re: How to groove a main bearing

4 cylinder chevy engines had the same problem and what i did was feed the main oil gallery from both ends using a remote oil filter with 2 outlets.
by pamotorman
Sun May 10, 2020 7:57 am
Forum: Engine Tech
Topic: Piston oil squirters in NASCAR engines
Replies: 39
Views: 3457

Re: Piston oil squirters in NASCAR engines

all the supercharged corvette engines use squirters to cool the pistons.
by pamotorman
Sun Apr 26, 2020 2:20 pm
Forum: Engine Tech
Topic: Crankshaft Hardness
Replies: 3
Views: 634

Re: Crankshaft Hardness

i offset ground 350 chevy cranks to make 3.562 strokers for short track engines and never had a crank or bearing failures
by pamotorman
Sat Oct 26, 2019 11:06 am
Forum: Engine Tech
Topic: C8 Corvette dynos high???
Replies: 26
Views: 1604

Re: C8 Corvette dynos high???

as an owner of 11 new corvettes,last one was a 2008 and if I was not 85 years old I would have #12 on order. my reaction times now are not good enought for that quick a car. I was still doing track days with the 2008 but now I just drive my 2018 silverado. back in the day we did drive them in the sn...
by pamotorman
Wed Sep 04, 2019 11:01 pm
Forum: Engine Tech
Topic: Oil Immersed Exhaust Valve springs
Replies: 9
Views: 970

Re: Oil Immersed Exhaust Valve springs

oil does a lot to cool the valve spring as I saw a movie of a test done at the GM tech center. the stock block chevy engines test running at indy were losing valve springs in just a few laps. GM did a dyno test where they could shut off the oil to the top end and with see thru valve cover you could ...
by pamotorman
Fri Aug 16, 2019 5:53 pm
Forum: Engine Tech
Topic: land rover sleeve drop
Replies: 24
Views: 2497

Re: land rover sleeve drop

never did a land rover but doing air cooled 2 stroke dirt bike sleeves I cut shallow grooves on the OD and filled them with red Loctite before pressing them in. did it help who knows but they never sunk
by pamotorman
Tue Jun 25, 2019 11:30 am
Forum: Engine Tech
Topic: All aluminum engine vs cast iron (Piston to head)
Replies: 14
Views: 1541

Re: All aluminum engine vs cast iron (Piston to head)

when I built all aluminum BBC with steel rods I set the pistons at .010 out of the block at piston rock both sides with a .042 head gasket. I told the owners not to run at full throttle till up to temp.
by pamotorman
Sun Jun 02, 2019 6:49 am
Forum: Engine Tech
Topic: Reputable links for horsepower from windage tray/crank scraper
Replies: 255
Views: 13151

Re: Reputable links for horsepower from windage tray/crank scraper

I saw a video at the GM tech center of a small block race engine with a plexiglass window in the wet sump road race pan and at speed it looked like a big brown rope wrapped around the rotating assy. a 14 inch deep dyno pan was installed without any thing else changed and the engine picked up 30 HP.
by pamotorman
Fri May 24, 2019 7:46 pm
Forum: Engine Tech
Topic: Reputable links for horsepower from windage tray/crank scraper
Replies: 255
Views: 13151

Re: Reputable links for horsepower from windage tray/crank scraper

scraper and windage tray on LS engines and you can bet GM put a lot of dyno time on this setup
by pamotorman
Sat May 04, 2019 10:35 am
Forum: Engine Tech
Topic: Unbelievable engine survival main cap break
Replies: 28
Views: 2933

Re: Unbelievable engine survival main cap break

back in the days with iron caps I would mill the caps flat and use a cap strap made of CRS and longer studs.
by pamotorman
Fri Apr 26, 2019 2:43 pm
Forum: Engine Tech
Topic: Replacement for the Holley 660 center squirters
Replies: 47
Views: 3038

Re: Replacement for the Holley 660 center squirters

on the ones I wanted to hide the 4 shooter for tech inspection I ran a brass tube back to the center of the carb and used the air cleaner boss as the squirter by drilling holes in it. I did AFB carbs the same way. :D
by pamotorman
Fri Apr 26, 2019 2:18 pm
Forum: Engine Tech
Topic: Replacement for the Holley 660 center squirters
Replies: 47
Views: 3038

Re: Replacement for the Holley 660 center squirters

back in the 60s I build my own 4 shooter using this device I built using a 1:1 linkage and a 50 cc pump.
by pamotorman
Sun Apr 14, 2019 6:46 pm
Forum: Engine Tech
Topic: Venting about so called "builders"
Replies: 43
Views: 4322

Re: Venting about so called "builders"

I rebuilt several SBC short track engines build by a top engine builder and both were 11:1 instead of 13:1 for race gas. I guess he did not want to have a problem if the owner put in a bad tune.
by pamotorman
Fri Apr 12, 2019 5:41 pm
Forum: Engine Tech
Topic: Is Blueprinting Worth Anything on an LS
Replies: 14
Views: 1457

Re: Is Blueprinting Worth Anything on an LS

don't the corvette engines make over 750 hp with a stock aluminum block and warranty for 36,000 miles.