92 RS 305 5spd power
01-01-2017, 07:54 PM
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92 RS 305 5spd power
How much power can I put down using the factory 5 speed manual trans?
Right now all I have is an aftermarket open element k&n air filter, cowl induction, headers, high flow cat and muffler, 2.5" exhaust and a jet performance chip.
Looking for other inexpensive power adders too?
Right now all I have is an aftermarket open element k&n air filter, cowl induction, headers, high flow cat and muffler, 2.5" exhaust and a jet performance chip.
Looking for other inexpensive power adders too?
01-02-2017, 08:11 PM
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Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: 92 RS 305 5spd power
You can destroy a T-5 with a 6-cyl. (or so I'm told... never even SEEN a 6-cyl in one of these cars, let alone DRIVEN one, so I can only repeat rumors)
I destroyed ... oh, ... a half-dozen or so ... behind my OE 305. Granted it was a L69, not just a L03, but still.
I also made my last one live for about 30,000 miles or maybe more, behind a 400. I consciously forced myself not to pretend any more, that it was a Muncie or T-10.
It's statistical. Some people get REAL lucky (not me) and some others (me) get hosed at every turn.
Do ya feel lucky? Well, DO YA?
I destroyed ... oh, ... a half-dozen or so ... behind my OE 305. Granted it was a L69, not just a L03, but still.
I also made my last one live for about 30,000 miles or maybe more, behind a 400. I consciously forced myself not to pretend any more, that it was a Muncie or T-10.
It's statistical. Some people get REAL lucky (not me) and some others (me) get hosed at every turn.
Do ya feel lucky? Well, DO YA?
01-04-2017, 05:55 PM
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Re: 92 RS 305 5spd power
okay thanks for your input.
i think my next step is to focus on a new rear end posi if there's a kit or if i have to put in a whole different rear end. i gotta research that. with the torque of the 5spd in first gear all it does is spin a tire at 2500+ rpm.
ya i feel lucky lol
i think my next step is to focus on a new rear end posi if there's a kit or if i have to put in a whole different rear end. i gotta research that. with the torque of the 5spd in first gear all it does is spin a tire at 2500+ rpm.
ya i feel lucky lol
01-04-2017, 07:07 PM
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Re: 92 RS 305 5spd power
Your is a world class t5 its much stronger then the ones behind the old l69.
they will last behind your 305 they start to fail if your doing alot of hard launches.
they will last behind your 305 they start to fail if your doing alot of hard launches.
01-04-2017, 07:34 PM
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Re: 92 RS 305 5spd power
Yeah I'm aware. I'm not drag racing it. Well a little street race here and there. But mostly I wish it had a posi rear end for better traction in rain and snow. It's a strong car with only 42k original miles.
01-04-2017, 08:15 PM
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Re: 92 RS 305 5spd power
The 2nd design T-5 is only marginally stronger than the 1st design.
Still has the same tiny gears; the same distance between the shafts; etc. etc. etc. In fact a fair # of the parts interchange.
Main difference between 1st & 2nd design was, 1st design had the countergear mounted on straight rollers (in fact the rear one is the same part # as a 7½" 10-bolt axle bearing) with thrust washers, while the 2nd design had it on tapered rollers with a slight preload. Very minor difference as far as "strength". The blocker rings in the 2nd design had a composition lining instead of being brass in the 1st but that doesn't influence "strength".
Eeeeeeeeezy enough to put a posi in the rear. I'd suggest this one here. https://www.summitracing.com/parts/e...-010/overview/ You can most likely just slap it in there with the old shims, although, it would be a much better idea to check the backlash and preload, and re-set them if necessary. Although, if your car has a 3.08 gear (most likely), that won't work; you'll have to put 3.23 or higher gears in at the same time, in which case, setup will become much more labor-intensive and critical. I don't know of any posi carriers you can buy for your 2-series 3.08s other than a used stock one, but there might be one somewhere.
Bottom line remains, if your car hooks up and you shock the transmission (clutch dumps, speed shifting, etc.), then it's only a matter of time, and not much of that, before it catches up with your T-5 and turns it to shrapnel.
Still has the same tiny gears; the same distance between the shafts; etc. etc. etc. In fact a fair # of the parts interchange.
Main difference between 1st & 2nd design was, 1st design had the countergear mounted on straight rollers (in fact the rear one is the same part # as a 7½" 10-bolt axle bearing) with thrust washers, while the 2nd design had it on tapered rollers with a slight preload. Very minor difference as far as "strength". The blocker rings in the 2nd design had a composition lining instead of being brass in the 1st but that doesn't influence "strength".
Eeeeeeeeezy enough to put a posi in the rear. I'd suggest this one here. https://www.summitracing.com/parts/e...-010/overview/ You can most likely just slap it in there with the old shims, although, it would be a much better idea to check the backlash and preload, and re-set them if necessary. Although, if your car has a 3.08 gear (most likely), that won't work; you'll have to put 3.23 or higher gears in at the same time, in which case, setup will become much more labor-intensive and critical. I don't know of any posi carriers you can buy for your 2-series 3.08s other than a used stock one, but there might be one somewhere.
Bottom line remains, if your car hooks up and you shock the transmission (clutch dumps, speed shifting, etc.), then it's only a matter of time, and not much of that, before it catches up with your T-5 and turns it to shrapnel.
Last edited by sofakingdom; 01-04-2017 at 08:20 PM.
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01-05-2017, 05:31 PM
#8
Re: 92 RS 305 5spd power
Choose your clutch wisely. Too much clutch will either spin your tires, bog your engine, or break your drivetrain.
1- make sure the T5's tapered bearings are shimmed up slightly tighter than factory spec, also add a countershaft bearing support plate to keep it's bearings snug. Short of changing the gearset, there's not much else you can really do to "beef up" your T5.
2- for your 305 i would want an organic clutch disc and around 2200lb of pressure plate clamp, should be enough to handle 400 ft/lbs at the flywheel.
With the above your T5 will be able to take clutch dumps without issue, but i would want at least 3.73 gears if i were taking it to the track. The idea is to have just enough clutch to handle all the torque the engine can produce, which makes possible clutch dump launches with a T5 with a minimum amount of bog. Keeping the rpm up is really important if you want a good 60' from a 305.
1- make sure the T5's tapered bearings are shimmed up slightly tighter than factory spec, also add a countershaft bearing support plate to keep it's bearings snug. Short of changing the gearset, there's not much else you can really do to "beef up" your T5.
2- for your 305 i would want an organic clutch disc and around 2200lb of pressure plate clamp, should be enough to handle 400 ft/lbs at the flywheel.
With the above your T5 will be able to take clutch dumps without issue, but i would want at least 3.73 gears if i were taking it to the track. The idea is to have just enough clutch to handle all the torque the engine can produce, which makes possible clutch dump launches with a T5 with a minimum amount of bog. Keeping the rpm up is really important if you want a good 60' from a 305.