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John K Samba Member
Joined: January 10, 2010 Posts: 85 Location: NORTH CAROLINA
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Posted: Sat Apr 14, 2012 2:29 am Post subject: freeway flyer? or stock? |
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I have a 71 Ghia with a three ribbed bus transmission in it It is running excellent but was wondering if it's a freeway flyer tranny in it. (the previous owner did not know) It has 205-50-15 tires, (in back) and at 1800 to 1900 RPM the speed is about 55 MPH (that's what my gauges say anyways) Does this sound about right for a freeway flyer or a stock tranny? Thanks |
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bugguy076 Samba Member
Joined: December 11, 2007 Posts: 1068 Location: Dover, PA.
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Posted: Sat Apr 14, 2012 2:55 am Post subject: |
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My '67 bug with '75 tranny gears and motor runs 3300 at 65 mph. That's 3.88 R/P and 0.93 4th. Yours running at that low RPM, I say freeway. |
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krusher Samba Member
Joined: September 24, 2002 Posts: 7652 Location: europe
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Posted: Sat Apr 14, 2012 4:52 am Post subject: Re: freeway flyer? or stock? |
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johnnycrash wrote: |
I have a 71 Ghia with a three ribbed bus transmission in it It is running excellent but was wondering if it's a freeway flyer tranny in it. (the previous owner did not know) It has 205-50-15 tires, (in back) and at 1800 to 1900 RPM the speed is about 55 MPH (that's what my gauges say anyways) Does this sound about right for a freeway flyer or a stock tranny? Thanks |
The typical "freeway flyer" is where a type1 bug/ghia trans has its normal 4th gear changed out for a long 4th gear from a reduction box split bug tranny.
You having a 3 rib bus trans (this is from a 68/79 bus) would not be like that.
I think your rev counter is way off.
With 205/50/15 (23.1") tyres, these are very small
I bus tranny with those tyres should have you in the area of 3500@ 55
1800/1900rpm should be about 28/29 mph
Using an aftermarket 3.44 and bus .82 4th in a type1 trans (the longest gears i know off you still only get 46mph at 1900rpm
How ever if your front tyres are also 205/50/15 then your speedo is 9% over speeded, meaning your 55mph is only 50mph.
what front tyre size do you have.?
And I still think your rev counter is broke _________________ (06:31:07) RoachGhia: "i drink dick way too fast" |
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mcmscott Samba Member
Joined: March 12, 2010 Posts: 4848 Location: sanger ca
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Posted: Sat Apr 14, 2012 7:56 am Post subject: Re: freeway flyer? or stock? |
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krusher wrote: |
johnnycrash wrote: |
I have a 71 Ghia with a three ribbed bus transmission in it It is running excellent but was wondering if it's a freeway flyer tranny in it. (the previous owner did not know) It has 205-50-15 tires, (in back) and at 1800 to 1900 RPM the speed is about 55 MPH (that's what my gauges say anyways) Does this sound about right for a freeway flyer or a stock tranny? Thanks |
The typical "freeway flyer" is where a type1 bug/ghia trans has its normal 4th gear changed out for a long 4th gear from a reduction box split bug tranny.
You having a 3 rib bus trans (this is from a 68/79 bus) would not be like that.
I think your rev counter is way off.
With 205/50/15 (23.1") tyres, these are very small
I bus tranny with those tyres should have you in the area of 3500@ 55
1800/1900rpm should be about 28/29 mph
Using an aftermarket 3.44 and bus .82 4th in a type1 trans (the longest gears i know off you still only get 46mph at 1900rpm
How ever if your front tyres are also 205/50/15 then your speedo is 9% over speeded, meaning your 55mph is only 50mph.
what front tyre size do you have.?
And I still think your rev counter is broke |
A 3 rib bus trans was used from 68 into 74 and typically had a 5.38 r/p, the 5 rib,also a 002, was used in 74 only and had a 4.86 r/p, 75 thru 79 was an 091 trans with 6 ribs and primarily used a 4.57 r/p.
My gut feeling is you are looking at a t-1 trans and not a t-2. Also don't forget that Ghias were the only VW to come with a 3.88 and .89 fourth. Hope this explains some. |
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sactojesse Samba Member
Joined: November 21, 2006 Posts: 2655 Location: Sacramento, California, USA
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Posted: Sat Apr 14, 2012 8:27 am Post subject: Re: freeway flyer? or stock? |
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mcmscott wrote: |
Also don't forget that Ghias were the only VW to come with a 3.88 and .89 fourth. |
Yup, 1971-1974 model year ghias came with a 3.875 ring and pinion and .89 fourth gear.
I also concur with prior comments that your tachometer is not functioning properly. _________________ 1966 Karmann-Ghia convertible |
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John K Samba Member
Joined: January 10, 2010 Posts: 85 Location: NORTH CAROLINA
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Posted: Sat Apr 14, 2012 10:09 am Post subject: re: tranny |
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To answer the first gentleman who asked me tire size and make of tach, the front tires are 135/15 and the tach is a Sun Pro I do have access to a calibrated light tachometer at work so I think I'll check the actual RPM readings with what it says on the tach. I never thought about the tach being defective. And thanks to all who replied to my question I'm still learning about these best cars ever built. (o\ ! /o) |
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krusher Samba Member
Joined: September 24, 2002 Posts: 7652 Location: europe
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Posted: Sat Apr 14, 2012 10:37 am Post subject: Re: re: tranny |
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johnnycrash wrote: |
To answer the first gentleman who asked me tire size and make of tach, the front tires are 135/15 and the tach is a Sun Pro I do have access to a calibrated light tachometer at work so I think I'll check the actual RPM readings with what it says on the tach. I never thought about the tach being defective. And thanks to all who replied to my question I'm still learning about these best cars ever built. (o\ ! /o) |
your 135 tyre is about 8% under sized compared to a stock size tyre, make your speedo 8% over speeded.
so 55moh is actually about 50. Your speedo could also be horribly be out of calibration.
Use a GSP or modern to tell us what speed you speedo says when you a re truly doing 60mph.
Should be able to work out your ratios then. _________________ (06:31:07) RoachGhia: "i drink dick way too fast" |
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John K Samba Member
Joined: January 10, 2010 Posts: 85 Location: NORTH CAROLINA
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Posted: Sat Apr 14, 2012 11:27 am Post subject: re: tranny |
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I do know my speedo is off The speed was determined using a GPS |
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donmurray Samba Member
Joined: December 30, 2008 Posts: 841 Location: Frisco Texas
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Posted: Sat Apr 14, 2012 12:42 pm Post subject: |
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74 Ghia with stock trans (3.88 & .89 4th). Tires are Hankook 165R15. It does 70 mph at 3150 rpm. Tach is Dakota Digital. Speedometer checked with GPS & is very close. _________________ 74 Ghia, with 2110 engine
Last edited by donmurray on Sat Apr 14, 2012 9:03 pm; edited 1 time in total |
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andy198712 Samba Member
Joined: December 05, 2010 Posts: 1209 Location: Cornwall - UK
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Posted: Sat Apr 14, 2012 3:02 pm Post subject: |
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the speedos are off, even with stock tyres, they are on all cars |
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sactojesse Samba Member
Joined: November 21, 2006 Posts: 2655 Location: Sacramento, California, USA
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Posted: Sat Apr 14, 2012 4:36 pm Post subject: Re: re: tranny |
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johnnycrash wrote: |
To answer the first gentleman who asked me tire size and make of tach, the front tires are 135/15 and the tach is a Sun Pro I do have access to a calibrated light tachometer at work so I think I'll check the actual RPM readings with what it says on the tach. I never thought about the tach being defective. And thanks to all who replied to my question I'm still learning about these best cars ever built. (o\ ! /o) |
Perhaps you have the tach set in 6 cylinder mode. A SunPro should have a cylinder switch for 4-6-8 cylinders. _________________ 1966 Karmann-Ghia convertible |
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bsairhead Samba Member
Joined: October 08, 2008 Posts: 3475 Location: viroqua wi.
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Posted: Sat Apr 14, 2012 4:44 pm Post subject: |
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andy198712 wrote: |
the speedos are off, even with stock tyres, they are on all cars |
BS My 68 bus with stock size tires or tyres is exact, confirmed by a state trooper friend of mine. |
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