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Search: Posts Made By: Dave in MN
Forum: Model A (1928-31) 10-29-2020, 04:18 PM
Replies: 15
Views: 666
Posted By Dave in MN
Re: What color to paint repro Winfield 7:1 head?

Red because you almost always get 10 more horsepower if the head is red.

All the engines I have attached to my dyno with red heads have produced at least 10 HP more than a stock engine. A few...
Forum: Model A (1928-31) 09-03-2020, 07:38 AM
Replies: 191
Views: 38,094
Posted By Dave in MN
Re: The Terry Burtz 5 main bearing engine blocks are back on track.

Bill,
The engine bearing surfaces including the mains, cam and rods are fed oil from an oil passage located between the tappet bosses and the cylinder walls. The crankshaft is drilled to feed the...
Forum: Model A (1928-31) 08-16-2020, 01:00 PM
Replies: 11
Views: 3,201
Posted By Dave in MN
Re: Kwik way lbm

I have a 1.5" bar on my line boring machine. Given its diameter, I use it only for boring blocks for insert bearings. Even with the increased diameter, it will chatter when cutting the thrust...
Forum: Model A (1928-31) 08-12-2020, 10:20 AM
Replies: 7
Views: 418
Posted By Dave in MN
Re: Knock/rattle/tap at freewheel speed

Have you tried to duplicate the sound while in neutral with the tires blocked by slowly raising the rpms? If you have someone in the car slowly raising the rpm until the sound presents itself, with...
Forum: Model A (1928-31) 08-10-2020, 06:12 AM
Replies: 13
Views: 607
Posted By Dave in MN
Re: 12v amps gauge

To the OP: I agree with Badpuppy's comment, it is possible to use the stock 6 volt ammeter in a 12 volt system by reversing the leads.

This is off topic somewhat: I installed an AC unit in a...
Forum: Model A (1928-31) 08-08-2020, 06:19 AM
Replies: 30
Views: 1,127
Posted By Dave in MN
Re: Lightened Flywheel

Brent,
I agree, it added weight and that was key in lowering the range of vibration. The same happend when a flywheel of approximate equal weight, that was solid...no balancer added, was tried.
The...
Forum: Model A (1928-31) 08-07-2020, 02:36 PM
Replies: 34
Views: 1,692
Posted By Dave in MN
Re: Electronic ignition advise

Same.

98,000 miles on my NU-Rex. 1st module.
32,000 miles on my '31 S/W FSI 1st module.

I've worked on a couple cars with electronic ignition and the problem has always been an...
Forum: Model A (1928-31) 08-07-2020, 02:12 PM
Replies: 30
Views: 1,127
Posted By Dave in MN
Re: Lightened Flywheel

Brent,
We may have discussed this before so sorry if it is a repeat. For the rest, it may be of interest.

When using a lightened flywheel, I have had the experience of the "naturally occurring...
Forum: Model A (1928-31) 07-30-2020, 05:40 PM
Replies: 5
Views: 414
Posted By Dave in MN
Re: Nu Rex

I have installed a couple on customer's cars and if set/timed correctly, they work quite well. I have also replaced the main bearings on four engines that either the owner or someone else installed...
Forum: Model A (1928-31) 07-27-2020, 09:29 PM
Replies: 21
Views: 1,129
Posted By Dave in MN
Re: engine / trans install question

If you plan to install as one unit, do youself a favor and remove the light bar and front bumper. Put some padding on the bumper bracket ends to protect your shins.
Good luck...be safe.
Good Day!
Forum: Model A (1928-31) 07-27-2020, 09:39 AM
Replies: 18
Views: 832
Posted By Dave in MN
Re: 1930 Sport Coupe 11 MPG, backfire when turned off

The "bang" is likely un-burned fuel in the muffler that ignites when oxygen reaches it. You may have a small hole in the muffler or a loose connection at the muffler flange. A rich fuel mixture...
Forum: Model A (1928-31) 07-21-2020, 03:58 PM
Replies: 13
Views: 1,003
Posted By Dave in MN
Re: Estate planning/thinning the herd

40 Deluxe and Step-down, I would have room for an old Harley and more Model A Parts! Just saying..LOL!

I come from a large family where all the brothers hunt and fish together. I have gifted a...
Forum: Model A (1928-31) 07-20-2020, 09:14 AM
Replies: 24
Views: 1,435
Posted By Dave in MN
Re: Model A Estate Plans

My wife has long been suggesting I get rid of my stuff (parts) so my two sons won't have to deal with the issue. I have been putting her off as I don't want to get rid of anything as I have plans to...
Forum: Model A (1928-31) 07-15-2020, 11:50 AM
Replies: 45
Views: 1,900
Posted By Dave in MN
Re: Model A Day at Gilmore Cancelled!!!

Good question Brent.
My wife and I would not attend a large gathering of elderly folk, like ourselves, until a vaccine with a success rate of 80% reliability is developed and a minimum 50% of the...
Forum: Model A (1928-31) 07-15-2020, 11:30 AM
Replies: 16
Views: 827
Posted By Dave in MN
Re: Rear Main Bearing Drain

I agree. From my experience of building almost 200 engines, if clearances and assembly practices are right, they won't leak. Of those almost 200 engines, about 20 of them were "B" engines. I have...
Forum: Model A (1928-31) 07-13-2020, 02:36 PM
Replies: 2
Views: 321
Posted By Dave in MN
Re: update on leaking zenith carb

If the fuel level is too high in the bowl it could also be higher than the main jet or cap jet and that causes the fuel to flow out those two jets.
So lowering the level of the fuel could stop the...
Forum: Model A (1928-31) 07-08-2020, 04:28 PM
Replies: 191
Views: 38,094
Posted By Dave in MN
Forum: Model A (1928-31) 07-08-2020, 12:33 PM
Replies: 191
Views: 38,094
Posted By Dave in MN
Re: The Terry Burtz 5 main bearing engine blocks are back on track.

Terry,
Would you share the part numbers for the insert main and rod bearings and rear crankshaft seal?
I assume the front will or could be a modern or the standard packing seal.

I'm interested...
Forum: Model A (1928-31) 07-07-2020, 08:28 AM
Replies: 78
Views: 11,945
Posted By Dave in MN
Re: Insert bearings

Synchro909,
I have used AER bearing shells for the past 12 years in over 180 engines. Since I started using them I can only recall 4 engines that had the experience of the bearing material breaking...
Forum: Model A (1928-31) 07-05-2020, 11:38 AM
Replies: 78
Views: 11,945
Posted By Dave in MN
Re: Insert bearings

Synchro, Is it possible that the timing was a bit too far advanced for the load at times? It only takes a short run with too much advance to damage a bearing. Would you be able to share some photos...
Forum: Model A (1928-31) 07-04-2020, 08:43 PM
Replies: 78
Views: 11,945
Posted By Dave in MN
Re: Insert bearings

Synchro,
I made a series of tests on an engine I was building for myself on my dyno some years back related to the required oil clearance for the insert bearings I use. I found I needed to increase...
Forum: Model A (1928-31) 06-30-2020, 06:58 PM
Replies: 30
Views: 2,588
Posted By Dave in MN
Re: Is this head gasket seepage acceptable?

I suggest using no antifreeze while seating the "Best" brand composition gasket. The gasket may weep a bit until it goes through a few heat/cool cycles. Yes, the same for a non high compression head...
Forum: Model A (1928-31) 06-29-2020, 04:33 PM
Replies: 10
Views: 591
Posted By Dave in MN
Re: Rear Wheel Horsepower & Torque

Denis4x4, Interesting info on your engine. One of mine is similar.

FWIW: My '31 S?W Town Sedan with T-5 transmission.
My full pressure "B" engine block has: Inserts, high output Stipe oil pump...
Forum: Model A (1928-31) 06-23-2020, 01:01 PM
Replies: 2
Views: 538
Posted By Dave in MN
Re: Cylinder sleeve

I suggest the 3/32. This leaves you the option of going larger later if ever needed. I have had a machine shop experience a set-up error where the machinist mis-read the mic. and bored too large for...
Forum: Model A (1928-31) 06-20-2020, 05:29 PM
Replies: 30
Views: 2,588
Posted By Dave in MN
Re: Is this head gasket seepage acceptable?

Bruce!, Yes...clear water.
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