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Search found 735 matches

by jsgarage
Wed Nov 23, 2022 9:58 pm
Forum: Engine Tech
Topic: BBC rear main leak
Replies: 31
Views: 1160

Re: BBC rear main leak

Some rear main seals work better if the seal lip is wiped with motor oil during assembly. Starting the engine with such a seal dry sometimes induces abnormal seal wear probably due to the thin lip sticking to the dry steel of the journal. On other main seals, the mfgr tells you to assemble dry. Best...
by jsgarage
Tue Nov 08, 2022 8:00 pm
Forum: Engine Tech
Topic: If you own an engine dyno
Replies: 31
Views: 811

Re: If you own an engine dyno

Maybe use a cattle watering immersion heater, as MT suggested. My Husky's water tank stays thawed down to -10F with 10 watts of power. No installation either- just drop it in. For 1200 gallons, you might need the large size- maybe two of them. Guys at the local feed store can help you calculate what...
by jsgarage
Tue Nov 08, 2022 5:42 pm
Forum: Engine Tech
Topic: Oily piston tops
Replies: 12
Views: 536

Re: Oily piston tops

You basically have 2 choices for fixing oily piston crowns: oil coming up past the rings or oil going down past the valve guide seals. Some builders don't use seals on the exhausts for unknown reasons. I seal 'em all and I don't use those bad-joke OEM umbrella "seals".
by jsgarage
Tue Nov 08, 2022 5:16 pm
Forum: Engine Tech
Topic: Bill's SBF build advice
Replies: 65
Views: 1961

Re: Bill's SBF build advice

Unless someone's already been in the car other than the engine/tranny, Falcon 6s had narrow 4-bolt wheels and hubs, light duty rear ends and drum brakes. Is this going to be a downtown-driver or is it possible he will want to occasionally go around a corner smartly, as well? LOTS of opportunity in t...
by jsgarage
Tue Oct 25, 2022 7:11 pm
Forum: Engine Tech
Topic: 289 heads on a '84 302 block?
Replies: 6
Views: 502

Re: 289 heads on a '84 302 block?

Are you or any of your friends competent to lay a few cast iron weld beads down in the chamber bowls? After contour-peening and maybe some cold-chisel work to kinda equalize the chambers, that would raise the compression without having to weaken the castings by deep milling. Since its just for a fun...
by jsgarage
Tue Oct 25, 2022 6:56 pm
Forum: Engine Tech
Topic: The new G100UL Avgas
Replies: 4
Views: 333

Re: The new G100UL Avgas

115-145 was designed as a slow burner for giant aircraft cylinder bores and below-2400 rpm engine speeds. We 'borrowed' some for a little 250 Zundapp 2-stroke amateur race motorcycle, at a Navy base one summer evening. Once. At 5000 rpms, the exhaust pipe had a bright 2-foot streamer of still-burnin...
by jsgarage
Sat Oct 08, 2022 6:36 pm
Forum: Engine Tech
Topic: Dropping the exhaust decibels on street motor
Replies: 24
Views: 1546

Re: Dropping the exhaust decibels on street motor

Agree with the OP: I got tired of noisy cars sometime in the last century but muffler mfgrs consistently avoid mentioning what dBs you might expect when using their product. In fairness, this is possibly because there are SOOO many things that affect noise outa the tailpipes. That said, I've found e...
by jsgarage
Sat Oct 08, 2022 6:23 pm
Forum: Engine Tech
Topic: Lifter Manufactures And Who Are They
Replies: 59
Views: 12471

Re: Lifter Manufactures And Who Are They

Check the link-bar rollers, too. We found part of a set (no name) in which the rivit staking was barely visible and the rivit could be pushed out by hand. One popped loose on the dyno which led to this post. Now I really don't trust anyone! (Well, maybe Mike at Bullet.....)
by jsgarage
Fri Oct 07, 2022 4:04 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Temperature issues
Replies: 49
Views: 2015

Re: Temperature issues

If you've actually tried all 3 pgs of suggestions and nothing has changed, a few more things to check: 1)- calibrate the temp gauge that has you worried. Or plug in a cheap replacement for a checkup. Generally, if the rad is not spitting water, its not overheating regardless of what the gauge says. ...
by jsgarage
Fri Sep 30, 2022 5:38 pm
Forum: Engine Tech
Topic: What's better A timing chain setup or a gear drive setup
Replies: 23
Views: 1376

Re: What's better A timing chain setup or a gear drive setup

FWIW, in my opinion a 4-steel-gear drive is more durable and precise than a chain on a street car, as the engine in question is a 351-Cleveland with a cam that redlines that big heavy valvetrain at 6500 rpm. Especially since that area of any V-8 pushrod engine is lubed by random splash, which is pro...
by jsgarage
Thu Aug 25, 2022 6:39 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Temperature issues
Replies: 49
Views: 2015

Re: Temperature issues

Walter said, 'check the water pump pulley ratio' and that's good advice. 351-C Panteras are known to have about 20% undersized radiators due to their low noses, and they run 1:1 pullies from the factory. This all works fine until you start adding 25% or more extra power. FWIW, I had an uncomfortably...
by jsgarage
Thu Aug 25, 2022 4:51 pm
Forum: Engine Tech
Topic: Transmission?
Replies: 10
Views: 772

Re: Transmission?

FWIW, I've broken stock 4 speed Saginaws with a pathetic stock 305 V-8. Once drove a near-new '82 Z-28 home 50 miles IN NEUTRAL when a gear welded itself to the mainshaft at an autocross, in a gearbox full of factory oil. Had to disassemble using a 20 ton press. The same gears and gearbox were used ...
by jsgarage
Thu Aug 25, 2022 3:49 pm
Forum: Engine Tech
Topic: Pat Ganahl
Replies: 8
Views: 931

Re: Pat Ganahl

I had friends that ran an A/Altered at the midwest's US-30 drag strip in the late '50s. I have photos of "Greasy George Guzik' and his Ranger 6 rail job. This was an air cooled WW 2 straight 6 airplane engine. It ran inverted with the giant cylinders hanging down below the crankcase. George had 4- y...
by jsgarage
Sun Aug 21, 2022 5:30 pm
Forum: Engine Tech
Topic: Small Block; really, really small
Replies: 5
Views: 1716

Re: Small Block; really, really small

There are a couple of clubs in the SF Bay area that specialize in this insanity. Mostly retired machinists and old engineers. I went with a friend to one of their meetings. One guy brought a show-and-tell scale model SOHC V-12 Ferrari that he'd spent 5 years making- it fit in a small suitcase. He fi...
by jsgarage
Sun Aug 21, 2022 5:16 pm
Forum: Engine Tech
Topic: Soldering/drilling jets?
Replies: 12
Views: 816

Re: Soldering/drilling jets?

I use(d) soldered and drilled jets to dial in sets of carbs especially when not much info was available on the combo. Worked well when combined with a plug cut, but I then always ordered factory jets of a size indicated by my hand drilled soldered jets. I tend to tune for longevity and 50:50 solder ...