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Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- problems with my shifter...
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problems with my shifter...
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
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sandshark
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Post Post subject: Re: problems with my shifter...
Posted: Thu Aug 07, 2008 07:44 PM
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Neander, how big is your new engine and how big are your tires? Assuming the engine is properly tuned, you need a decent ring & pinion ratio to turn big tires with any kind of reasonable performance. I found a chart sourced from Kennedy Engineered Products that lists all tranny & differential gear ratios for various trannys. If you have the original transaxle, and ring & pinion set in that car, you probably have a 4.125:1 ring & pinion. You can verify which trans you have by a code stamped on the passenger side (on a flat spot at about 8 o'clock, as viewed from the front of the case), ahead of the axle. For '68 it should start with AH. My guess is if you're running anything over 30" tires with a stock 1600cc engine, your performance isn't going to be very good. You can run some calculations to figure out if your tires are a reasonable size. The formula goes: RPM x 1/2 tire diameter, divided by, gear ratio x ring & pinion ratio x 168. Assuming you have a totally stock AH code tranny (3.80 1st gear, 4.125:1 R&P) and 30" tires, you should get about 28 MPH @ 5000 RPM in 1st gear. If your running 33" or bigger, it's gonna be a dog.


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Neander
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Post Post subject: Re: problems with my shifter...
Posted: Sun Aug 10, 2008 01:10 AM
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the engine that i put in it is a 1641cc, and im pretty sure the tranny is stock. the cars been a mystery ever since i got it. the guy didnt know anything about it like what mods have been done to it. the tires on the back are 30x10 inches.

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sandshark
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Post Post subject: Re: problems with my shifter...
Posted: Sun Aug 10, 2008 07:05 PM
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Check that transaxle code. If it starts with AH, it shouild have a 4.125:1 ring & pinion. With 30" tires, seems it should be ok. I'd look for problems with the engine, maybe start with intake or cylinder/head leaks.


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Neander
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Post Post subject: Re: problems with my shifter...
Posted: Sun Aug 10, 2008 10:04 PM
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so basicly its just not getting enough power n torque to get the car moving at a lower rpm? o and im running a w100 cam with a stock carb...borderline cam/carb combo i know but that was all i had haha. it is an AH transaxle. i also noticed that when i manually crank the engine over by hand, you can hear a slight hissing sound, which would suggest a compression leak right? Confused

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perrib
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Post Post subject: Re: problems with my shifter...
Posted: Mon Aug 11, 2008 07:43 AM
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This reminds me of 21 years ago when someone said I should get a Baja instead of my 250R.

Grab a beer or a soda and let me give you an idea of what you are in for when the VW bug bites. Heres some of what happened to me. I'm sure others have suffered a similar fate.
Congratulations you have just entered the evil VW BAJA vortex was what they should of told me. The 100 cam would work fine if you put 235 75 tires on the rear.The cheapest fun I ever had off road was with a stock engined Baja and 235/70 15 tires. It went 85% of the places a race one can just a little slower. I started down the Vortex by purchasing a 68 auto stick street Baja for $200 that everything worked. The same day the 4 speed conversion started. The suspension got raised to the stops and KC lights were mounted on the cowl. In a hurry to go off roading I did not wait to fabricate a skid plate. My reward was to get a sump stud pulled out. I fixed the stud. I installed the seat belt portion of a set of 5 points. Coming to a stop in a sand wash demonstrated the need for tires wider than 235/70 15. Tired of stopping on hard ground, 30x10.50 15 BFG All Terrains were installed on a set of used Jackmans some on had traded for stock rims. I should have asked why. Next trip sand starts were no problem but third and fourth gear were now worthless. An 1835 was assembled with a 4062 Bug Pac cam. dual 40 Dells, better heads. Now 1,2,3 were working good off road. The stock suspension limited 4th gears use. Someone also gave me their copy of Baja's and Buggies and I verified what I learned: dual carbs are not the first choice for off roading. An hour into the fun an axle was spit out. An 80 mile round trip to the shop supplied two axles. Both of which were needed. Fortunately the Bugorama was in town the next week. I procured a set of 280Z axles with modified flanges and axles for only $40.00. I already had the 3 rib BUS IRS transaxle hanging around. I made my own mounts. Next trip I'm smiling ear to ear for a while. Now the front tires became consumables. While at AZ Transaxle picking up the close ratio transaxle for my newly acquired rail Bill sold me a set of 7.00 15 Yokahamas. Then I lucked out and met Mark Magruder from Team McDonalds. Hhe gave me a new Zenith carb, a VZ 25 style cam and introduced me to Dean Lowry who supplied a set of heads for a 2180. It was installed in my rail and I knew what the Baja needed. Short on cash a 1835 with a Zenith carb, 041 heads and a VZ 15 style cam were installed. I wanted more suspension but with two rails, the Baja, a new rat rod drag bug and a dragster on the way funding was short. The Baja perform faithfully for three years until the desert struck back. The Baja rolled at Sycamore. The big seats belts worked. Scott and I were hanging up side down. He asked me if I was ok. I said lets get out and see if we can roll it over and drive out. Like dummies both of us undo the belts forgetting gravity. Battery acid was dripping. I thought I should have installed a battery box. The body was tweaked, widows intact and the roof rack crushed but it looked drivable. Flipping it was the problem as it was laying across a ravine not much wider than the Baja. We spun it on the roof and flipped it over. This was Saturday and I had previous plans to go back to Sycamore with Mark Sunday. By now my future wife was not amused by our style of riding. I was lucky other than the body it was ok. After a hard Sunday the roof rack broke five miles from the truck. It would have been ok except it cracked the Mesa cooler. I bypassed the cooler but was to low on oil. Eventually a forestry truck stopped and a couple of quarts later I was homeward bound. I bought a prerunner for its cage and another bug for the body. Dan at CE supplied a set of used 10x1 Jack Woods trailing arms, disc brakes, 930 CVs and SAW axles. A trip to Woods Wheel Works for a few more parts resulted in a 10x12 wider rear end. Mark and I extended the front beam. By 1994 drag racing had consumed most all the budget. The insanity of the next step in drag racing(Buying Folts and Schultzs old dragster for 35K) ipromted that phases to end. Reality was setting in. So with the arrival of a new Baby and other distractions the Baja was put to pasture where sadly it remains. Resurrection is not scheduled for at least two years. The rails are still running so I am still deep inside the Vortex. It not to bad once your in. Enjoy your trip.

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Neander
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Post Post subject: Re: problems with my shifter...
Posted: Mon Aug 11, 2008 10:27 PM
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id say you could write a book haha. yea im starting to feel the "fix 1 thing, another thing breaks" evil baja vortex deal. but im sure ive got a whole lot more in store for me.

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