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Title: what makes a good street tranny Post by: Peter on December 28, 2008, 15:46:36 pm Hi guys,
now my motor is running i m thinking of buying a beefed up tranny ( or having one rebuilt ) so what do you think are good ratios for a street tranny? and it should hold up to the abuse.. i will never use slicks, but i would like to race a bit as well... for ratios i was thinking for something between stock and race ( if it exists ) i have a type 3 tranny, but dont know if they are a good or bad base to start from... also, maybe somebody knows how much $$ i have to save for this? :) btw hp of my motor i dont know, but it pulls to 7grand quite hard thanks, Peter Title: Re: what makes a good street tranny Post by: Bewitched666 on December 28, 2008, 18:32:55 pm Whats your ring and pinion ruff?
Title: Re: what makes a good street tranny Post by: Peter on December 28, 2008, 18:44:14 pm i think 4.125???
early IRS type 3 trans Title: Re: what makes a good street tranny Post by: Zach Gomulka on December 28, 2008, 19:19:46 pm If you plan on driving it long distances at a reasonable speed, then stock ratios really are the way to go. 4.12 r+p, 3.78, 2.06 mainshaft, 1.26, .89. Use 3 gears in the 1/4 mile- my friends '67 achieves 13.8's on tall 215/65 radials with that combo with a pump gas 1915 :)
Title: Re: what makes a good street tranny Post by: Martin Greaves on December 28, 2008, 19:25:45 pm This is a good way to work out which ratios you need.
www.johnmaherracing.co.uk/gearcalc.htm Title: Re: what makes a good street tranny Post by: Rennsurfer on December 28, 2008, 20:13:47 pm Amen, brother... that's exactly what I want in my car for my big engine.
If you plan on driving it long distances at a reasonable speed, then stock ratios really are the way to go. 4.12 r+p, 3.78, 2.06 mainshaft, 1.26, .89. Use 3 gears in the 1/4 mile- my friends '67 achieves 13.8's on tall 215/65 radials with that combo with a pump gas 1915 Title: Re: what makes a good street tranny Post by: tikimadness on December 28, 2008, 20:20:12 pm I used to drive a irs gearbox and I put in a super diff and a heavy duty sideplate.It was surprisingly strong and it hold up with all my abuse.
Michael Title: Re: what makes a good street tranny Post by: beetletom on December 29, 2008, 01:04:58 am makeup and a dress. :D
Title: Re: what makes a good street tranny Post by: Zach Gomulka on December 29, 2008, 02:05:51 am makeup and a dress. :D Hahaha spat my pumpkin pie out!! Title: Re: what makes a good street tranny Post by: Peter on December 29, 2008, 11:48:00 am haha, good point :)
i dont drive it often on the highway, so thats not really a concern, i will try the calculator from JMR and do some self reflection :) Title: Re: what makes a good street tranny Post by: Peter on December 29, 2008, 12:08:17 pm hi guys, was thinking about 1.48 3rd and 1.09 4th;
that would give me 90 km/h at 3500, and 180 at 7000 what are your thoughts? Title: Re: what makes a good street tranny Post by: Bewitched666 on December 29, 2008, 14:57:53 pm 7000 rpm is alot of noise on the highway ;D
Title: Re: what makes a good street tranny Post by: Zach Gomulka on December 29, 2008, 15:36:13 pm Shift point?
Title: Re: what makes a good street tranny Post by: Speed-Randy on December 30, 2008, 04:57:20 am the person putting it together, hows there rep. that is unless you like doing it again
Title: Re: what makes a good street tranny Post by: danny gabbard on December 30, 2008, 17:36:30 pm lots of make up and good shoes
Title: Re: what makes a good street tranny Post by: Jim Ratto on December 30, 2008, 18:29:12 pm makeup and a dress. :D a wig helps too and a shaven chest Title: Re: what makes a good street tranny Post by: Harry/FDK on December 30, 2008, 18:43:01 pm Hi Ruff. I got good information on my topic: Transmission Blues. (In Da Werks). Maybe that helps you as well.
Title: Re: what makes a good street tranny Post by: Peter on December 30, 2008, 20:04:47 pm hi guys, shift point is at 6500 or 7000 (depends)
thanks Harry, indeed, good info! Title: Re: what makes a good street tranny Post by: Zach Gomulka on December 30, 2008, 20:51:11 pm hi guys, shift point is at 6500 or 7000 (depends) thanks Harry, indeed, good info! Well, if your shift point is 7k, then that is about what you want to cruise through the traps in in 4th gear, lets call it 110mph to give you a little room. That is if you want a full close ratio gearbox designed to do best on the strip. Now just do the math ;) Title: Re: what makes a good street tranny Post by: Harry/FDK on December 30, 2008, 20:57:00 pm Fourth might be loud on the Autobahn. I'm using earplugs. But happiness is a SNAPPY 4th gear.
Title: Re: what makes a good street tranny Post by: danny gabbard on December 30, 2008, 21:17:53 pm Dim the lights and they have to have a wig , I forgot about the wig , jim
Title: Re: what makes a good street tranny Post by: Jim Ratto on December 30, 2008, 21:31:59 pm Dim the lights and they have to have a wig , I forgot about the wig , jim you must be inexperienced. Sheep used to do the trannies at Buggy House. Or he was the tranny... can't remember. Title: Re: what makes a good street tranny Post by: danny gabbard on December 31, 2008, 06:23:04 am Do you need to soften the lights with sheep? Jim
Title: Re: what makes a good street tranny Post by: Peter on December 31, 2008, 13:52:04 pm you guys crack me up:)
Title: Re: what makes a good street tranny Post by: Peter on December 31, 2008, 14:34:23 pm Hi guys,
I ve been reading a bit on "other forums" and i think i will go for a 1.48 3rd and 1.04 or 1.09 4th and keep the 4.12 r/p now about reenforcements that have to be made? is this about it? Stock 002 M/S 091 1st gear Idler All new bearings (including pinion and 091 mainshaft gear carrier bearing) New 1st gear synchro Weddle HD sidecover Weddle welded 3rd and fourth Super Diff 10 Tooth Spiders 15 tooth side gears 4.12 O or 3.88 R&P thanks , Peter Title: Re: what makes a good street tranny Post by: Zach Gomulka on December 31, 2008, 15:38:26 pm 3.78, 2.06 mainshaft, and I advise a 1.12 4th with the 1.48. With a 1.04 the 3-4 gap is too big, IMO.
Title: Re: what makes a good street tranny Post by: Jim Ratto on December 31, 2008, 21:48:40 pm Fourth might be loud on the Autobahn. I'm using earplugs. But happiness is a SNAPPY 4th gear. I like stock ratios with 4.375:1 in my Bug. Sure, the rpm drops are a little wide, but I'd trade the bigger drops between shifts for sanity in 4th gear any day. With big cc engines, the need for close gears isn't as extreme as the smaller 1700-1900cc high strung stuff. My car pulls fairly well from about 2300rpm in its current state of tune, and kind of falls into "cruise mode" in 4th at about 4000rpm, which is faster than I really should be going on L.A. freeways anyway. I think my driving style goes hand in hand with stock 1st-4th and 4.375:1.... more sports car than drag car. Ruff you're running a 2276 right? Maybe you don't need the close stack? I ran my 2276 with 86C with stock ratios for about 4 years and loved it. In fact when I went close 3rd and 4th was the reason I began to hate my car. Have fun JIM Title: Re: what makes a good street tranny Post by: Peter on January 02, 2009, 16:00:21 pm Hi Jim;
my car feels a bit slow in 3 rd and 4 th, but i ll take it for another trip today and i have a longer r/p its ok for highway use, but actually i dont drive it there much Harry, so what gears did you end up with? anyway, i still have some time ...as i still have to start saving for a box :) Title: Re: what makes a good street tranny Post by: Bruce on January 03, 2009, 07:21:36 am I ran my 2276 with 86C with stock ratios for about 4 years and loved it. For a car that gets driven as much as yours, shouldn't it have a 5 gear in it?In fact when I went close 3rd and 4th was the reason I began to hate my car. Title: Re: what makes a good street tranny Post by: Harry/FDK on January 03, 2009, 18:55:00 pm Harry, so what gears did you end up with? R/P 4.12 1- 3.78 2- 2.06 3- 1.26 4- 0.89 Title: Re: what makes a good street tranny Post by: Peter on March 16, 2009, 19:38:53 pm time to revive my topic...
broke the box yesterday, coming to freddyfiles :'( so i am now searching for a box again i am still in a dilemma to use short 3 and 4 or not... i would like these gears are a bit snappier, and 1/4 mile is not so important.. i dont race it so much anyways what do you guys think? thanks, Peter Title: Re: what makes a good street tranny Post by: aussie on May 03, 2009, 11:58:38 am I was looking for exactly the same thing from my gearbox - ended up with the following:
4.125 3.44 2.00 1.32 0.93 Will let you know how it feels when I fit it! Title: Re: what makes a good street tranny Post by: 67worshipper on May 04, 2009, 10:41:38 am ruff ive got a 3.88 ring and pinion with 3.78,2.21,1.58 and 1.21 which makes it about 60mph in 4th at 3200rpm and 70mph is 4000rpm in 4th.thinking about putting a 1.04 4th to drop the revs a little and not loose to much on the strip.whose got a 1.04 4th with a 3.88 r+p and what speed at 60 and 70?
Title: Re: what makes a good street tranny Post by: Peter on May 04, 2009, 11:03:58 am hi guys,
because i didn have more money to spare, i chose for stock ratio's :-[ this is what will be installed in a few weeks Rancho Pro Street Plus (Same as Pro Street with these Extras) $1199 Trans comes complete axle to axle 3.78 Super Beetle 1st 4.12 K ring and pinion Chromoly Pinion Plate or Nut SAW Axles for (Swing)and Boots like i said, most of the time i will be driving on the street, and never use slicks, so lets hope it stays together :) Title: Re: what makes a good street tranny Post by: 67worshipper on May 04, 2009, 11:35:50 am do you know the exact ratios ruff.you,ll be fine just lay off the burn outs and dont dump the clutch in first.
Title: Re: what makes a good street tranny Post by: Peter on May 04, 2009, 12:16:16 pm i think:
3.78 1st 2.06 2nd 1.26 3rd 0.89 4th and a 4.12r/p cheers, Peter Title: Re: what makes a good street tranny Post by: j-f on May 04, 2009, 12:27:31 pm There is also some nice street beef up trans at CSP with different ratio and 4th gear ;)
Title: Re: what makes a good street tranny Post by: Peter on May 04, 2009, 12:53:57 pm a 0.89 is allready long enough for me j-f :)
i dont like to drive on the belgian freeway anyway :) and i think with the extras its a bit stronger? Title: Re: what makes a good street tranny Post by: Diederick/DVK on May 04, 2009, 14:50:36 pm do you know the exact ratios ruff.you,ll be fine just lay off the burn outs and dont dump the clutch in first. just wondering, what would he need to be able to do burnouts? it sounds like a nice 'box to me... p.s. ruff, what bothers me about the belgian freeway is the asphalt, pretty lethal without dropped spindles. is that what you mean? Title: Re: what makes a good street tranny Post by: tikimadness on May 04, 2009, 15:52:10 pm Go for a super diff and some heavy duty side covers and you are fine for burn outs(even in first gear) ;)
Michael Title: Re: what makes a good street tranny Post by: Diederick/DVK on May 04, 2009, 15:57:48 pm what's the difficulty scale of upgrading a stock gearbox with a super diff and HD side covers, once you have build a hi-po VW engine? ;)
Title: Re: what makes a good street tranny Post by: tikimadness on May 04, 2009, 16:02:46 pm You need to shim the ring and pinion(preload) and set the backlash.
It is not just exchanging the diffs . Michael Title: Re: what makes a good street tranny Post by: Peter on May 04, 2009, 16:55:51 pm Quote just wondering, what would he need to be able to do burnouts? it sounds like a nice 'box to me... p.s. ruff, what bothers me about the belgian freeway is the asphalt, pretty lethal without dropped spindles. is that what you mean? yeah, that, and the fact the the front end gets very light with speeds above 150 :) Title: Re: what makes a good street tranny Post by: 67worshipper on May 04, 2009, 17:51:09 pm do you know the exact ratios ruff.you,ll be fine just lay off the burn outs and dont dump the clutch in first. just wondering, what would he need to be able to do burnouts? it sounds like a nice 'box to me... p.s. ruff, what bothers me about the belgian freeway is the asphalt, pretty lethal without dropped spindles. is that what you mean? |