|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
06-29-2020, 11:25 AM | #21 |
Senior Member
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
|
Re: 1934 Tudor needs a little hop-up
And remember, it's not the WHEEL size that's important when figuring speed potential....it's the outside circumference of the tire, or the outside diameter of the TIRE that is important in your overall computations. I TOO would stay with the 16" spoke wheels. They are a stronger wheel than the 17", and much easier size to find GOOD tires for. Pretty good advice in post #20 just above. DD
|
06-29-2020, 11:36 AM | #22 | |
Senior Member
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,778
|
Re: 1934 Tudor needs a little hop-up
Quote:
What sounds like your engine over revving is really just fan noise. we are used to the silence of modern cars which makes us think an old car is ready to explode, just due to the noise level. Old cars had little or no sound deadening insulation in the firewall, and fans were not engineered to be quiet. With your engine cool, remove the fan belt and go for a short test run and see the difference. Your engine reallly is happy at 60-65 MPH. Do you know of Zora Arkus-Duntov? I read an interview with him some years ago. He visited the U.S. in the 1930's and entered a 1934 Ford roadster (stock) in the Elgin Road Race (a then-popular event in Illinois). He removed the fenders and was clocked at 105 MPH on a slight downhill section. He calculated the RPM and was quite impressed. He said he had a race car in Europe with a Hispano-Suiza engine that would blow up long before reaching that RPM. On your gearbox idea of machining new gears, third is direct which is as high as you can get. Oh, you could make 2nd into overdrive by machiing a new cluster gear and driven gear, but then you would have to wind it out in first then shift to direct and finally to what what was 2nd (now overdrive). Not practical. There are aftermarket overdrives that bolt into the torque tube (Mitchell or Volvo) or two speed rear axles (Columbia). |
|
Sponsored Links (Register now to hide all advertisements) |
|
06-29-2020, 12:32 PM | #23 | |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,304
|
Re: 1934 Tudor needs a little hop-up
Quote:
|
|
06-29-2020, 01:37 PM | #24 | |
Senior Member
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,778
|
Re: 1934 Tudor needs a little hop-up
Quote:
"other idiot drivers"?? What's wrong with holding a cell phone in one hand and a Big Mac in the other? I can steer with my knees, I'll have you know!! |
|
06-29-2020, 02:33 PM | #25 |
Senior Member
Join Date: May 2010
Location: CLAYTON DE
Posts: 1,283
|
Re: 1934 Tudor needs a little hop-up
Welcome Willkommen to The Barn. Happy to see you get some good attention. I experienced Germany the best part of a month in 1971. Shocked was I to find MBs being throttled to the max. Here they were ( at the time ) only used as deluxe transport. On your roads the exhaust pipes were throbbing. There, as you know, are hand signs for a slow driver. ( here as well, but different )
The posts above are all good #20 #21 #23 are very talented. #20 has done many deep dives on his stock favorite year. Then puts them to the test. Where you stand, his trials would be international. My take on the scene is not just making maintaining speed but getting speedy. Members here have found that raising compression by milling heads can make great strides in covering more ground. I've done it on my avatar. I found a very different experience after making the cut. Yes tubman #23 can speak to the ins and out of doing it with a V8. We, #23 and a lot of others should direct you to Flathead Ted for a set of his brake floaters. They make your mechanical brakes perform as well as hyd. brakes. WHEN properly adjusted. In my youth I recall the men talking about overseas or export Fords using thicker headgaskets in order to run on inferior gasoline. Your prize Might just be so equipped. Worth the gamble for a set gaskets to find out. Then while its opened up read up on 'The Tin Foil Ball Check', just ask. It's simply a painless way to see how much improvement one may derive from milling. Should you want to get into pulling the heads, find a how to or diy book, it will help,, if,, you should need help. My experience pulling heads was a birthright. I had to be a beginer with the valve in head or, OHV. In any case enjoy your '34 we shall all wish you well,, and wish we had a '34 too.
__________________
Enjoy yer day. Tom Hate can't fix what it started. |
06-29-2020, 05:26 PM | #26 |
Senior Member
Join Date: May 2010
Location: so cal, placerville, vegas
Posts: 1,394
|
Re: 1934 Tudor needs a little hop-up
Sponsored Links (Register now to hide all advertisements)
|
06-29-2020, 10:16 PM | #27 | |
Senior Member
Join Date: May 2010
Location: Melbourne Australia.
Posts: 2,078
|
Re: 1934 Tudor needs a little hop-up
Quote:
|
|
06-30-2020, 05:33 PM | #28 |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
I found a little more speed by removing the airfilter. The motor feels still too rich so I will adjust the float according to the notes of the Ford bulletin. Still I would like to find a 3,54 ratio set of ringgears for the diff and I do need a pair of 16" wheels - as all of you suggested. Now my local vintage tire dealer told me that the 7,00 x 16" Firestone is bigger in diameter than the 7,50" - is that true?
So if anyone has 2 16" wheels with at least 4" wide rim - I am ready to buy! |
06-30-2020, 05:58 PM | #29 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,212
|
Re: 1934 Tudor needs a little hop-up
Vincent, you can do it a cheaper way for the rear end ratio change,
What I did was to get a set of later model (48) 3.78 gearset and machine them to fit the 33/34 rear end. If you have access to a lathe a simple job. I have set of 48 3.78 in the 33 and have been in for 15 or so yrs, a very good modification. Lawrie |
06-30-2020, 07:50 PM | #30 | |
Senior Member
Join Date: May 2010
Location: East Shore of LAKE HOUSTON
Posts: 11,106
|
Re: 1934 Tudor needs a little hop-up
Quote:
It depends on the brand name. Coker vintage BF Goodrich tires can be sized that way. Firestones tend not to be. I have found in the past that the 7.00s have a wider cross section than the 7.50s. They're both VERY close in diameter. I would consider radial tires, especially if you want to go FAST. They drive so much nicer, too. Stahl Excelsior Radials are not cheap, but extremely good quality, and fit the Ford 4" wheels well, WITHOUT tubes. Pictured are 5.50 and 7.50 x 16 Stahl Excelsiors on 4" X 16" 1940 Ford wheels. They will fit the wire wheels the same. DD |
|
07-01-2020, 04:38 PM | #31 |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
I have no fan noise as the car has a thermostat and an electric fan, kicking in from time to time. I will adjust the carb next and get some bigger tires and see where this will put my speed range.
cheers, Harty |
07-01-2020, 04:41 PM | #32 | |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
Quote:
cheers, Harty |
|
07-01-2020, 05:17 PM | #33 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,212
|
Re: 1934 Tudor needs a little hop-up
There was a 3.54 for sale in the swap section.
Lawrie |
07-01-2020, 06:10 PM | #34 |
Senior Member
Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,829
|
Re: 1934 Tudor needs a little hop-up
Vincent, with respect, shouldn't the first thing to do be to calculate the existing diff ratio? You only 'think' it is a 4.11.
These cars are noisy at higher engine revs, however, it is my experience you cannot over-rev a flathead to dangerous RPM's; they run outta breathing before then. Your car, as others have stated, should do 80 MPH, might take a while to get there though!!
__________________
Unfortunately, two half wits don't make a whole wit! |
07-08-2020, 12:52 AM | #35 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,212
|
Re: 1934 Tudor needs a little hop-up
Vincent, we have just been out for the day(320 klms) in our bone stock 34 3 window coupe, standard bore 33 babbit engine, flat top pistons, stock transmission, 17 in wheels 3.54 rear gears, on the main hi way ran at 55 -60 mph , no over heat , gave it a squirt and no drama at all to get 75 MPH.
Engine as quiet as a mouse, a bit of wind noise, no worries staying straight on the road, and this is not a smooth road. Lawrie |
07-08-2020, 01:38 AM | #36 |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
Thanks Lawrie
This is exactly what I plan to do to my car. Fit the 3,54 ratio to the diff and use 7,50 x 16" tires on the rear. All of this should get me around 20% more speed with the same revs. No need to ever go fast but I sure want to lower the revs a bit. Harty |
07-08-2020, 02:55 AM | #37 |
Senior Member
Join Date: May 2010
Location: Qld, Australia
Posts: 4,212
|
Re: 1934 Tudor needs a little hop-up
Ours has the 550X17 crossplys.
Lawrie |
07-08-2020, 05:27 AM | #38 |
Senior Member
Join Date: May 2010
Posts: 4,743
|
Re: 1934 Tudor needs a little hop-up
Harty: What carburetor do you have on your engine? Do inspect the throttle to make sure you can get full throttle plate opening as suggested above.
|
07-15-2020, 02:29 PM | #39 |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
Okay folks
I checked all the parts that could help to get some more speed into the car. After fitting the regulator to the electric pump and freshing up the ignition distributor I adjusted the ignition to the works advice. After a testride I tried a bit more advance. The engine is now willing to rev and I was able to run higher speeds than before. The brakes are converted to hydraulic but the rest of car is stock with non-working shock dampeners (next job!) on all four wheels so the testride with around 110km/h was "interesting" .... I could have gone a bit faster but with the roadholding "as is" the speed was enough for the (wide) road available. I have to say, I did not expect this amount of power from this engine which really has seen better days. So in winter it will come out, get all that it needs, transmission gone through and updated where neccessary and with 4 working shock dampners we will be good to go! Thanks for all your help and suggestions - I will need a lot more of it in the coming months!!! cheers, Harty |
07-15-2020, 02:31 PM | #40 | |
Senior Member
Join Date: Jun 2020
Location: Germany
Posts: 204
|
Re: 1934 Tudor needs a little hop-up
Quote:
The powervalve might be leaking as I hear the electric pump do a couple strokes every re-start, even when the engine was shut off only a few minutes ago so I have to look into that as well. cheers, Harty |
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|