I've been looking to upgrade my clutch and flywheel for some time now. After reading almost all of the threads pertaining to clutch and flywheel upgrades, I've noticed that no one seems to mention what the kits come with. I've decided on the TRD clutch; can anyone tell me whether or not it comes with new bolts, throwout bearing and such?

Can't seem to remember where but someone in another thread mentioned using a new flywheel bolt as reusing the old one on a new flywheel is not recommended due to it being weaker. Can anyone comment on this? Oh, the flywheel I'm looking at is the Fidanaza one.

flywheel weight reduction is too much compared to stock... imo ..


the trd kit comes with a new throw out. bolts? new bolts for what ?


the trd kit is just an upgraded pressure plate but with a stock disc..... I DO NOT RECCOMMEND IT

if you want new flywheel bolts they just have to be grade 8. like 6-10 bucks worth of bolts at a hardware store. or 10-13 dollars worth at a dealer.

thanks for the reply Hotbox. So you suggest another brand clutch and just keep the stock flywheel?

If I install a new clutch, does that mean it is recommended to resurface the OEM flywheel as well?

I've always been curious as how a lighten flywheel would feel like. Some of my buddies have upgraded their clutches on their cars, but none of them has even touched the flywheel. Another thing, is it crazy to upgrade the flywheel but keep the clutch stock?

flywheel will need to be resurfaced.

a lightened flywheel will give you a few hp and let yer motor rev quicker , but it also means that when just put putting around town you will have to rev match each and every shift cause as soon as you depress teh clutch that flywheel is gonna slow down super fast.


yes it is crazy to keep the clutch stock no matter upgraded flywheel or not, lol . it just cannot hold...

what I should have done was had my flywheel lightened aka back cut. lose a few pounds but not almost all of teh weight liek a jun or a fidanza. but I didn't have teh time so it just got resurfaced.

i'd go with act clutches , spec , or clutchmasters. I have a spec stage 2+

Thanks for the replies hotbox, I know some of my questions may sound stupid. I'm just glad you're willing to answer them.

So resurfacing a flywheel is just like the way they resurface a brake rotor? When you mention back cutting a flywheel, is this procedure something that any mechanic can do? The place where I'm planning to go to get this install is not a performance shop or anything.

So with all the brands you've suggested, you think Stage 1 would be alright? I've got some bolt ons, but I'm not planning to go FI.

resurfacing is exactly like a brake rotor except it is balanced.

back cutting is where they machine the back excess metal that isn't needed for much.

this all gets done at a machine shop.

any mechanic can install it all. but the resurfacing and back cutting/lightening happens at a machine shop they do heads , blocks , rotors , drums , flywheels. all that jazz.

stage one should work well for you.

no problem man. :)

Gotta ask. In referring to the clutch. You talking pressure plate and clutch disk? I'm thinking the stock PP doesn't have strong enough springs to help the disk live a normal life.

the oine and only reason the clutches go out on xB's the way they do is that the clutch kit stock is meant for the echo , 200 or so pounds lighter , less aggressive gear ratios , and less likely to have power adders.


the trd kit uses stock equip disc and upgraded pp.

I would hope he's talking clutch kit as I certainly have been , lol.

Cool, that's what I thought but you never really know on here. lol

Cool, that's what I thought but you never really know on here. loltrue that, lol

We just got some new clutches from LuK and have them listed on our site. These clutches are designed for our Scions, for racing our heavy duty everyday use! Heavy duty for those lead footers! :D Check it out here: http://www.precisionmuffler.com/id143.htm
http://www.precisionmuffler.com/90b40f00.jpg

i'm pretty sure some xa owners have had the same issue.

i'm pretty sure some xa owners have had the same issue.

true but less people upgrade xa's so you don't hear about it as much. but yes. sorry i left ya guys out :) .

the xa's do weigh slightly less tho. not by much tho. both xa/xb are somewhat significantly heavier than echo's.

clutch masters stage 1 is a comfortable upgrade once the clutch finally goes IMO. ill need it soon. this is the last winter on this clutch. :nails:

Is the average lifespan of the stock clutches around 30K? This seems to be what I've been hearing. Too bad they weren't a little stronger so average people could get 100K out of them.

I have had mine on for about 65K miles and I have been on many road trips. I also have a lead foot, it was than I decided to change my clutch. :D To something heavy duty, LuK

My car just turned 60 on thursday (sniff sniff) i think next winter is gonna be the last winter

only when the clutch is real cold, below 40degrees ambient it slips at 1/4 to 1/2 throttle, then the fun begins climing up hill :-/ im glad i only drive 1.3 miles to work

Is the average lifespan of the stock clutches around 30K? This seems to be what I've been hearing. Too bad they weren't a little stronger so average people could get 100K out of them.if the car is stockish at least 60. if the car is bone stock and grandpa driven about 100k.

if modded and driven hard 5k starts slipping 30k slips horribly

I would only use flywheel bolts from the dealer. NEVER reuse your old flywheel bolts. Ive seen many flywheels come off from people doing this with Toyotas.

hotbox- how do you like that spec stage 2?

Anybody know exactly how to get these flywheel bolts from the dealer? Is there a part number or anything like that? I can imagine the confused look on the guys that work in the service dept. if I were to just ask about buying flywheel bolts....

just take one of the old ones with you to an auto parts store and they can match them up.. they just have to be the same hardness and size..

go to the parts counter. dealers don't care they're getting money

I would only use flywheel bolts from the dealer. NEVER reuse your old flywheel bolts. Ive seen many flywheels come off from people doing this with Toyotas.

hotbox- how do you like that spec stage 2?

it's nice., hooks up really well , still pretty smoothe.

the stainless clutch line helps i'm sure. the pedal is just as easy as stock.

it does lurch and get rough starts but it's ok it's a very nice upgrade imo.

stainless clutch lines are key. You have rough engagement?

i got a clutchmasters stage 3.
it's finally warm enough to install! i'm thinking saturday will be a lovely day for tinkering.
also have a fidanza.

clutchmasters makes a flywheel now, also. i think that it's not as agressive of a weight reduction. not sure. i made a thread that listed all of the flywheels and their weights that i could find. didn't add the clutchmasters though.

good luck.

So how hard is it to install a flywheel and clutch (pressure plate/ throwout bearing) by ones self?

stainless clutch lines are key. You have rough engagement?well lets just say you have to have some skill to drive it whereas with stock clutch just about anyone can drive it lurch free.

i got a clutchmasters stage 3.
it's finally warm enough to install! i'm thinking saturday will be a lovely day for tinkering.
also have a fidanza.

clutchmasters makes a flywheel now, also. i think that it's not as agressive of a weight reduction. not sure. i made a thread that listed all of the flywheels and their weights that i could find. didn't add the clutchmasters though.

good luck.

ya know I've been looking at the CM lightened flywheel myself. Looks like it will be a bit easier to drive than the Fidanza unit. Can anyone comment on this? I think the Fidanza one is almost 100 bucks cheaper so to me its pretty significant. My xA is my daily driver so I definitely would like to drive it without killing my legs. I believe the Fidanza is like 7.5 - 8 lbs while the CM one is like 10 - 10.5 lbs. Stock is 15 lbs I believe. Does anyone have any experiences with the two and can give me some feedback? Thanks

the lighter that is the more of a huge pain it will be unless of course you love rev matching every shift you make , lol.

So how hard is it to install a flywheel and clutch (pressure plate/ throwout bearing) by ones self?well they book at 5 hours labor i believe. you need a lift , an engine leveler thing , and air tools prefferably. not fun at all.

hmm so I guess if I were to upgrade the flywheel it would be in my best interest to get the CM one.

in my opinion yes.

http://www.scionlife.com/forums/viewtopic.php?t=104479&highlight=
please send me any links or info on other flywheels and i will update the opening.

some people like the really light flywheels, some people don't. someobody on this site said that they didn't like it in their xa/xb and went back to stock.

one thing to consider is that fidanza also makes a flywheel for the tC which is also 8 pounds, i think. maybe 8 pounds isn't so light for our engines despite the ~50% drop.

i'm gonna try the install tomorrow probably. i'll update on how it goes.

will lighten flywheell affect on fuel comsumption??

"Upgrading" to brute clutches and pressure plates isn't an upgrade at all, for normal street driving. Anything stronger than a stage one upgrade has a strongly negative effect on everyday driveability, while our little motors won't put out enough power to justify them unless very heavily modified. True racing applications are another story entirely...

Lightweight flywheels are similar... I really wouldn't go past a Clutchmasters stage one kit and lightweight flywheel for daily driving- the negatives outweigh the positives, and it turns into worse than a waste of money...

You want a steel braided clutchline with any upgrade, the expense being merely a minor addition to the total bill...

And resurfacing a used flywheel is a judgement call on the part of the installer, if it's smooth and surface crack free. It's quite common for used flywheels that are smooth and true to just get roughed up slightly with a scotchbrite pad on a mini-disc sander...

Used pressure plates are generally a lousy idea, as the spring to surface geometry changes as the surface wears, often giving poor disengagement with a new disc... not to mention spring fatigue as a problem... I wouldn't touch a used scion pressure plate with a pole, as they're at the lower limit of spring pressure in the first place...

Do yourself a favor, don't get carried away...

the stage 3 was hell for the first 1000 miles, despite the suggested 500 mile break in period. although it was fine after that, it was not really nice until about 3000. now, it slips and grabs when i want.

if nothing else, the stage 3 forced me to break some bad shifting habits.

if you do put in a new clutch, make sure the throw out bearing is high quality and properly lubricated. mine is starting to make noise before 10k.

for the record, i had planned on getting more power out of my xa, but those plans fell apart and i have not enough interest to put more time and money into the project after losing a fat wad of cash.
i had bought the clutch and flywheel ahead of time because of that expectation and to take advantage of a very good price. i think that i got both for like $500.

even if you do not put down any extra power, you might like the change if your stock clutch slips more than you like or you want to be forced to shift better.
just beware that the break in period can be really nasty as it was for me.

I'm looking into getting a new clutch, as my stock one is slipping at 10k ouch.

Def. a pain in the a$$ i did it my self with a friend....took a few hours installed a LUK pro gold and fidanza flywheel.....GREAT combo grabs like a MOFO and the fidanza is sooooo streetable its not even funny

how much does a machine shop charge for back cutting/lightening? just would like a guesstimate

I am rockin an Exedy stage II and a fidanza lightweight flywheel....... I love the setup and everything is badass about them i love it......it does not feel like the same car at all......actually quite peppy