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Search: Posts Made By: Jack Shaft
Forum: Model A (1928-31) Yesterday, 07:28 PM
Replies: 5
Views: 193
Posted By Jack Shaft
Re: The smell of gas

I remember the smell of gasoline before unleaded came along..The sense of smell is directly tied to memory.I get a kick out of the young buck mechanics at work who smell my model A idling and tell me...
Forum: Model A (1928-31) Yesterday, 09:42 AM
Replies: 10
Views: 585
Posted By Jack Shaft
Re: Volumetric Efficiency

The 'seat of the pants' dyno/volumetric efficiency calculator works for me..it uses asphalt and has painted stripes on it.
Forum: Model A (1928-31) Yesterday, 08:13 AM
Replies: 14
Views: 724
Posted By Jack Shaft
Re: Wanted 15" Wheels for Model A

Driveability and wheel total diameter makes a difference.. you change the final drive ratio when you go under about 30" of total wheel diameter. Hard to find a 15" tire with enough sidewall...
Forum: Model A (1928-31) Yesterday, 08:07 AM
Replies: 9
Views: 370
Posted By Jack Shaft
Re: Leaf springs and shocks

Makes sense.. The spring by design aides rebound seeking its relaxed position...under compression you work against it. Polishing and lubrication the leaves makes a big difference in how the car...
Forum: Model A (1928-31) Yesterday, 07:58 AM
Replies: 30
Views: 1,175
Posted By Jack Shaft
Re: SNYDER’S 5.5 head vs 6.1

You're not going to feel much difference in the seat of your pants between 5.5 and 6 to 1 in compression.
The problem with performance and a manual advance distributor is you engine timing is only...
Forum: Model A (1928-31) 04-17-2021, 09:12 PM
Replies: 5
Views: 407
Posted By Jack Shaft
Re: Budd Wheel Manufacturing Company

Ford manufactured at the Rouge and delivered to assembly plants around the country. .assembly plant managers were given the lee way to use parts from stock to meet demand..folks have jumped all over...
Forum: Model A (1928-31) 04-17-2021, 08:27 PM
Replies: 24
Views: 860
Posted By Jack Shaft
Re: Mystery leak

Ifs and buts will drive you nuts..sounds like you have a coolant leak..fix it
Forum: Model A (1928-31) 04-16-2021, 04:20 PM
Replies: 30
Views: 1,175
Posted By Jack Shaft
Re: SNYDER’S 5.5 head vs 6.1

The tolerance for timing deviation decreases when compression is increased, the 'hammer' effect of detonation increases when you raise compression and efficiency. Detonation can lead to bearing...
Forum: Model A (1928-31) 04-16-2021, 10:26 AM
Replies: 30
Views: 1,175
Posted By Jack Shaft
Re: SNYDER’S 5.5 head vs 6.1

5.5 especially if you are using the stock distributor
Forum: Model A (1928-31) 04-16-2021, 07:49 AM
Replies: 30
Views: 1,175
Posted By Jack Shaft
Re: SNYDER’S 5.5 head vs 6.1

5.5 is a copy of the only performance combustion chamber design by Ford engineering for the model A.6.0 is a modified heart design combustion chamber.

The stock model a ford engine suffered from...
Forum: Model A (1928-31) 04-15-2021, 01:04 PM
Replies: 34
Views: 1,554
Posted By Jack Shaft
Re: Highest Reliable Compression Ratio

Look no further than the 'new and improved' 4 cylinder engine introduced in 1932..other than just a mild compression increase it incorporated all the upgrades Ford engineering noted as necessary from...
Forum: Model A (1928-31) 04-15-2021, 11:54 AM
Replies: 15
Views: 428
Posted By Jack Shaft
Re: 6 to 12 Volt & Neg ground

It's a slippery slope,that whole modifying thing..soon you'll find yourself hopping up the engine and tearing the fenders off it..
Forum: Model A (1928-31) 04-14-2021, 09:52 PM
Replies: 9
Views: 522
Posted By Jack Shaft
Re: Hi-Compression Head

I bought a complete chassis with a Mitchell OD, cast iron drums f100 steering box, fresh engine, trans and rear end.. burned in a fire.. for 1500 bucks. I get a kick out of lowballers who want to...
Forum: Model A (1928-31) 04-14-2021, 09:04 PM
Replies: 9
Views: 522
Posted By Jack Shaft
Re: Hi-Compression Head

I bought an original winfield red head and a two carb intake for four hundred a year an a half ago...I still get a thrill thinking about that price..
Forum: Model A (1928-31) 04-14-2021, 07:47 AM
Replies: 34
Views: 1,554
Posted By Jack Shaft
Re: Highest Reliable Compression Ratio

Its important to note making these changes on a stock model a engine raises the engines efficiency. Higher compression, adding fuel, using a mechanical advance distributor and making it breathe...
Forum: Model A (1928-31) 04-13-2021, 08:31 AM
Replies: 58
Views: 2,474
Posted By Jack Shaft
Re: Max Speed of a Model A in Stock Form

https://i.imgur.com/dwourac.jpg

Its a slippery slope,ford flathead four cylinder speed
Forum: Model A (1928-31) 04-12-2021, 06:02 PM
Replies: 34
Views: 1,554
Posted By Jack Shaft
Re: Highest Reliable Compression Ratio

Maybe in Maine and alot of other spots in the country a stock model is adequate..here in suburban Northern CA A stocker running without convoy protection is at the mercy of the yahoos..
Forum: Model A (1928-31) 04-12-2021, 08:13 AM
Replies: 6
Views: 385
Posted By Jack Shaft
Re: Tires for my 16" wheels

205/75/16's if you want a stock look...cheap too.. modern radial superior to bias ply tires. Amazon crazy cheap, prime puts them at your house with no shipping cost
Forum: Model A (1928-31) 04-12-2021, 07:41 AM
Replies: 34
Views: 1,554
Posted By Jack Shaft
Re: Highest Reliable Compression Ratio

Original Winfield red head,7 to 1 compression on 'hard' babbit. Babbit does not fail from compression it fails from torsional vibration of a stock crankshaft and improper timing. Any increase in...
Forum: Model A (1928-31) 04-12-2021, 07:25 AM
Replies: 58
Views: 2,474
Posted By Jack Shaft
Re: Max Speed of a Model A in Stock Form

I have a modified car, the engine develops about double the power of stock, mitchell OD, modern radial tires on 16" wheels,f100 steering box, woven shoes, cast iron drums, Teds. friction shocks all...
Forum: Model A (1928-31) 04-10-2021, 08:35 PM
Replies: 29
Views: 1,918
Posted By Jack Shaft
Re: 80 Engines SOLD Middletown, NJ

A few months back I saw 25 mostly complete engines go for 500 bucks..
Forum: Model A (1928-31) 04-10-2021, 08:48 AM
Replies: 14
Views: 741
Posted By Jack Shaft
Re: Flywheel Housing Check

Flywheel housing alignment is critical with multidisc heavy truck clutches powering 3 shaft transmissions. Not for chatter but to insure a free running mainshaft. It can be used with a model a to...
Forum: Model A (1928-31) 04-10-2021, 08:23 AM
Replies: 15
Views: 623
Posted By Jack Shaft
Re: What are you working on?

Time? you find any of that ill pay top dollar..
Forum: Model A (1928-31) 04-10-2021, 08:21 AM
Replies: 15
Views: 623
Posted By Jack Shaft
Re: What are you working on?

I'm not cutting my six pack, I'm adding to it with a six pack
Forum: Model A (1928-31) 04-09-2021, 09:09 PM
Replies: 15
Views: 623
Posted By Jack Shaft
Re: What are you working on?

Dennis you're close,what do you need?
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