6G Celicas Forums

dan, your "elietist" additude is getting REALLY old.
stop.
just to remind you,
you, or anyone on the site for that matter, is no better than the next guy.
so stop acting like you know it all, cause we all know in reality, you know very little.

no i understand his concept.....but its totally the opposite of the entire discussion....and i do understand "cassette' style swaps and i've raced motorcycles so i've played with plenty of gearing as well as building my own motors....
but my bad for the use of "idiocracy" i should have said "opposite thought posting".......the entire topic of the post here is to LOWER the RPM in 5th gear...maybe even fourth gear....to me when people talk about lowering and someone comes along and talks raising...while the concept is still good and dandy....its good for people who don't do trips, don't cruise on highways....which again goes the opposite of discussion.....

so really if you want to get back onto track and cut the crap....
lowering the 5th gear down and 4th gear....corey if you get time check it...if not...then oh well

and just for some referances of proper changes in gear ratios and costing you can check out this thread here

http://forums.vwvortex.com/zerothread?id=2246118


This post has been edited by playr158: Dec 16, 2005 - 11:07 AM

Dan, I might run up just to check out their shop and the work they do, and I'll definately see how much such a thing would run us financially. But I know that a "bulletproof" tranny like they build would be nice when I swap....plus taller gears would benefit everyone.

I'll keep everyone posted.

heheh... you guys need to calm down a bit.

Also... there are two ways to modify the tranny. Changing the actual gears and then changing the final drive.

you sparked my interest yea over chirstmas break if ya find out more info i want to know the pricing range.

Hey, not that you want one, but just drive an Auto and you will have much lower RPMs cruising in higher gears. I know this is "off topic", but just a thought.

Yeah, the auto tranny on the GT uses a much broader top gear since theres only 4 gears instead of 5. I figure that aside from having high RPMS at not-so-fast highway speeds in 5th, it would be nice to see what they could do for our S54 trannys in terms of strengthening them a little via cryotreating them or shotpeening, or whatever along with maybe a lower final drive ratio or lower final gears for better cruising.

In all, I think it would be helpful to look into.....think of all the MR2 and Celica owners that could benefit something like this. Plus, a buddy of mine wants to upgrade the torque converter on his WRX, so I have a good excuse to go up there anyway.

I'll let you guys know how it goes.

This post has been edited by Silver94CelicaOwner: Dec 18, 2005 - 10:58 PM

Erm, yes, that's true. Kinda. Your torque peak is at your vE peak, the engine speed at which the combustion chamber can successfully burn the most fuel. As far as efficiency goes, that would be the least efficent part of the powerband, as your fuel burned/engine cycle ratio is at its highest. Your most efficent engine speed is idling in neutral .

Oh, and for the "custom transmission" discussion: Honda people (88-91 CRXs for this example) have been using the short ass ZC transmission with an SI 5th gear for quite some time, and it is cheap-as-free. The 1-4 ZC transmission allows you to tear up to 70 mph while staying well within your powerband. The SI final drive/ 5th gear allow real power to be made at 115mph and 140mph top speeds.

This post has been edited by [Freemantle]: Dec 18, 2005 - 11:11 PM

You don't go anywhere sitting in idle. What would be the point of rating engines like that? I'm refering to fuel burned/miles driven, not fuel burned/engine cycle. Sometimes I oversimplify or omit important stuff, my bad.

You right about peak torque coinciding with the brake mean effective pressure. The volumetric efficiency doesn't necessarily coincide with peak torque though and it's certainly not the speed at which the combustion chamber can burn the most fuel. It's simply a ratio of charge volume to cylinder volume, no mention of how well that charge burns. There are many more factors involved like combustion efficiency.

I think at this point we've moved well off topic and beyond most of the people on this site in terms of usefullness. Just to stay on topic: I think I'll stick with my stock transmission

yea i have done that before.... i also have totally missed 3rd and shifted into 5th from 2nd and also into 1st from 4th .. and wow .. not a nice feeling or sound... i also still stall around corners sometims... droping for 3rd to 2nd ... at low speeds.. still trying to figure out how i still do that.... but the worst is when R jams ... and i have to pull back to N then back into R....

as for tranny that bults up .. yeah .. the one you have.. the simplist thing to do would be going to a tranny shop having them pull your internal ... and giving you a custom 6th gear... but that comes at a high price... but if you have the funds and are willing to do that.. i can give you the names/numbers of some tranny shop that can help you with that ..