Forum: Model A (1928-31)
Yesterday, 12:29 PM
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Replies: 11
Views: 506
Re: "New Engine" Balancing"
To add one more point
The inline 4 cylinder engine suffers from the fact that the offset piston acceleration between top and bottom of stroke causes harmonics that cannot be dampened without adding...
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Forum: Model A (1928-31)
Yesterday, 10:34 AM
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Replies: 11
Views: 506
Re: "New Engine" Balancing"
Kurt
The subject of “balancing” the engine is another misunderstood science
I would suggest doing a little research on the ISO balancing standards
Once you determine the actual operating...
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Forum: Model A (1928-31)
05-16-2024, 08:20 PM
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Replies: 15
Views: 644
Re: cam lube
Depends on what motor you are putting together.
Cam material is the issue, better safe than sorry, moly anti seize
J
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Forum: Model A (1928-31)
05-15-2024, 08:00 PM
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Replies: 6
Views: 391
Re: Head Studs or bolts with aluminum head
So this is my take on the subject
Both bolts and studs do the same job but the wear is very different on the threads in the block
Studs especially good quality ones will resist stretching and keep...
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Forum: Model A (1928-31)
05-14-2024, 07:18 AM
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Replies: 16
Views: 819
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Forum: Model A (1928-31)
05-01-2024, 07:11 AM
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Replies: 14
Views: 946
Re: KRW Combination Machine
Ray
The Babbitt talent is already on the decline unfortunately
Inserting the motor is already done with good success and now the Burtz motor is available
But you do have a point as new people...
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Forum: Model A (1928-31)
05-01-2024, 07:04 AM
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Replies: 11
Views: 693
Re: Head stud to block
One last point to be concerned with here
Be careful to not drill too deeply
The stud boss is fairly thin in the bottom and you do not want to penetrate into the water jacket
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Forum: Model A (1928-31)
04-26-2024, 09:57 AM
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Replies: 26
Views: 2,290
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Forum: Model A (1928-31)
04-24-2024, 12:39 PM
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Replies: 26
Views: 2,290
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Forum: Model A (1928-31)
04-23-2024, 08:24 PM
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Replies: 26
Views: 2,290
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Forum: Model A (1928-31)
04-19-2024, 07:50 AM
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Replies: 13
Views: 2,541
Re: Stipe Machine/Specialty Motor Cams
The blanks are not hard to make
The drive gear is a little tricky but not impossible
The biggest challenge is getting the basic profiles for the lobes done, heat treated and final finish.
J
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Forum: Model A (1928-31)
04-18-2024, 12:00 PM
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Replies: 7
Views: 762
Re: valve recession
Typically having a valve low will not cause too much trouble other than limiting port flow
It should be noted that removing material from the seat will never raise the valve up
Replacing seats is...
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Forum: Model A (1928-31)
04-14-2024, 03:24 PM
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Replies: 26
Views: 2,025
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Forum: Model A (1928-31)
04-07-2024, 05:47 PM
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Replies: 24
Views: 1,638
Re: Oil Pump Shaft
hmmm,
This has been my concern with modified V8 pumps for the model A.
The housing was never made for this and he castings too thin.
I made a few billet alum adaptors for V8 pumps that will never...
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Forum: Model A (1928-31)
04-02-2024, 10:40 PM
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Replies: 15
Views: 1,572
Re: Model Tree
For sale 1928 Chevrolet Roadster
Ran when parked… 45 years ago
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Forum: Model A (1928-31)
04-02-2024, 09:17 PM
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Replies: 24
Views: 1,638
Re: Oil Pump Shaft
Pete,
I have been using Dailey, Barnes and Aviaid wouldn't have it any other way on an expensive motor....
J
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Forum: Model A (1928-31)
04-02-2024, 09:03 PM
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Replies: 24
Views: 1,638
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Forum: Model A (1928-31)
04-01-2024, 05:33 PM
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Replies: 24
Views: 1,638
Re: Oil Pump Shaft
Considering the pump shafts are .498 diameter finding a 5/8 shaft will be difficult to assemble
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Forum: Model A (1928-31)
04-01-2024, 10:57 AM
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Replies: 24
Views: 1,638
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Forum: Model A (1928-31)
03-30-2024, 09:06 PM
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Replies: 31
Views: 2,654
Re: V8 Clutch in Model A: Something is not right
From the first picture it looks like the pressure plate is compressed too far, disk is too thick. It is positioning the arms too deep into the PP assembly, no room to actuate and release the clutch....
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Forum: Model A (1928-31)
03-28-2024, 01:17 PM
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Replies: 28
Views: 2,342
Re: Electric Model A's
More than likely his wife could drive a stick and he was jealous
Yes learning to drive one should be a requirement for license
It will educate the drivers or prevent those who shouldn’t
J
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Forum: Model A (1928-31)
03-22-2024, 10:05 PM
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Replies: 5
Views: 807
Re: what is this? mag drive?
It is an attempt at a side drive magneto
The gear is properly sized for a mag with 2:1 gear reduction or a governor
Most aircraft mags are 2:1 or crank speed.
J
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Forum: Model A (1928-31)
03-14-2024, 10:06 AM
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Replies: 21
Views: 7,612
Re: Model B engine advantages?
Considering this thread is 10 years old it still holds true with the exception of Terry Burtz accomplishing seemingly the impossible feat
J
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Forum: Model A (1928-31)
03-11-2024, 03:26 PM
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Replies: 16
Views: 1,565
Re: Donovan 4 Cylinder
So yes Terry
The diamond blocks have been used
I am someone will have an issue and that will change
J
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Forum: Model A (1928-31)
03-11-2024, 12:42 PM
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Replies: 16
Views: 1,565
Re: Donovan 4 Cylinder
Chris
The V4 classes are Vintage strictly meaning original blocks of pre 1935 manufacture
You can run the Donovan in the displacement classes but the architecture is a disadvantage
J
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