some Q's about XT14X coronas

[Johnzoku]

hey guys, been thinking of getting a XT14X corona recently and i got a few questions, ive rear the first 35 pages of the "corona dedicated thread" so if its already been covered dont shoot me

been reading up on the 22r motor and theres quite a few articles on the net that give awesome tips for powering up the 22r/20r (i.e. http://www.toysport.com/Technical%20...tech_notes.htm) and even on ebay theres a store that sells a full twin webber side draft kit with mainifold for 1300us (i think) but comming accross a rt142 seams to be a hard task to find... ive seen 1 or 2 but there around the 3g mark in QLD at the moment and thats a little more than i want to spend right now.

im planing to have this as an on road track slider, something i can bash around with out to much worrie about not being able to find panles (not like my Z10 soarer which is hard as if i didnt have three of them) and ive been to a heap of wreckers that have 2 or three st141's just sitting around when ive been there so it doesnt seam like a car thats in short supply.

so my questions i guess are,

if i cant find an RT142 at a decent price are the ST141's just as good of a choice? how do the BW gear box's hold up and can i change the rear end to say a ra60 T serise easily?

if i was to change to a W box can i use the gearbox X member, tail shaft, hard lines etc...?

and if i was to convert to a 3SGE would that out weight the benfits of doing up a 20/22R motor? (headwork, carb's etc....)

last question, being a big fan of IRS i was wondering what other models come with the IRS rather than the RT142?

big thanks in advance.
X

[GA61XX]

hey guys, been thinking of getting a XT14X corona recently and i got a few questions, ive rear the first 35 pages of the "corona dedicated thread" so if its already been covered dont shoot me

been reading up on the 22r motor and theres quite a few articles on the net that give awesome tips for powering up the 22r/20r (i.e. http://www.toysport.com/Technical%20...tech_notes.htm) and even on ebay theres a store that sells a full twin webber side draft kit with mainifold for 1300us (i think) but comming accross a rt142 seams to be a hard task to find... ive seen 1 or 2 but there around the 3g mark in QLD at the moment and thats a little more than i want to spend right now.

im planing to have this as an on road track slider, something i can bash around with out to much worrie about not being able to find panles (not like my Z10 soarer which is hard as if i didnt have three of them) and ive been to a heap of wreckers that have 2 or three st141's just sitting around when ive been there so it doesnt seam like a car thats in short supply.

so my questions i guess are,

if i cant find an RT142 at a decent price are the ST141's just as good of a choice? how do the BW gear box's hold up and can i change the rear end to say a ra60 T serise easily?

if i was to change to a W box can i use the gearbox X member, tail shaft, hard lines etc...?

and if i was to convert to a 3SGE would that out weight the benfits of doing up a 20/22R motor? (headwork, carb's etc....)

last question, being a big fan of IRS i was wondering what other models come with the IRS rather than the RT142?

big thanks in advance.
X

I thought that the ST141's had W55's in them..
The RT142 with IRS was an '86
S/RT141/2's have the same hangers as the RA40/60's.. so diff will fit
You can use the RT142's rear disc's on the RA40/60's diff..
I would go for the 141 as is a carby motor, & you could use a Hilux 22R..
EFI is different from the '85 to the '86..
Chassis is the same on the 141/2's as the RA60's so you can use the front brakes. ( coronas got solid disc's, & RA60/65's had vent's )

cheers

[GA61XX]

For a W55 box, SA63 best place to find parts...
eg. box, tail shaft, clutch, clutch lines, etc..

cheers

[Johnzoku]

thanks for the info! +rep

the ST141's i saw at the wreckers were BW (well pretty sure they were anyway)
i was hoping that there maybe was a ST142 that came with IRS as well but that would probley hard to find as well... the RT142's are the imported ones right?

i figured as much with the diff so if i get a live axle its defently on like donkey kong with a RA60 rear end and a cheep ae86 T serise LSD kazza or something 2way

im planing on building a carbie twin carbie motor so i guess it doesnt matter if i get EFI or not and ive been reading another thread that says that the ma61 and ra60 fuel take is very similar to rt141 tanks, so if thats the case i have a spard Z10 i can use with fuel lines.

i was also planning on using a spare pair of z10 struts and brakes that i have at home for a cheep upgrade, i guess that way you dont get the extra camber but bigger stub axles and brakes are a bonus... espically when free

ive read that the ae86 camber plates fit these? is that true?
also does the RT142 have the mounts for the live axle like the RA60 does for IRS?

the biggest pain would be going for 2s to 3s and finding the bell housing cuz i dont think theres many of them being wrecked aroun QLD anymore.

[GA61XX]

thanks for the info! +rep

ive read that the ae86 camber plates fit these? is that true?
also does the RT142 have the mounts for the live axle like the RA60 does for IRS?

the biggest pain would be going for 2s to 3s and finding the bell housing cuz i dont think theres many of them being wrecked aroun QLD anymore.

also does the RT142 have the mounts for the live axle like the RA60 does for IRS?

IRS dose not fit the RA60...... nor will it fit the ST141/2...
RA65 has IRS.. with "F" diff.... as dose the RT142 '86
For IRS you need a '86, RT142, & use MA61 LSD, with vented rear disc's.....
i see the SA63's in local wreckers now & then...

cheers

[Johnzoku]

ahh fair enough... just looking at my mates ra60 it seams to have provisons to put the mounts in his chassie... everything bar the IRS shock mounts.
and i was thinking this might off been the case for t14 chassie but i guess not.

im planing to use the rear brakes of my z10 as well cant jsut let them go to waste.

here's some places selling 20r/22r carbie adaptors/kits... its so tempting
http://www.jtspeed.com/index.php?cPa...k94moa0bq2su75
http://www.jameng.com/products/index.phtml?section=10

this guy on ebay
http://cgi.ebay.com/ebaymotors/ws/eB...ksid=p3907.m32


got a few more links to come

[Norbie]

Building a 22R to make reasonable power is very expensive. Have a look at the prices on RC Engineering's web site to get an idea; make sure you're sitting down. Also keep in mind all the big-power 22R's in the US are a 20R/22R hybrid, so you'll have to get your hands on a 20R cylinder head somehow which is no easy task since they were never sold here.

In terms of cost-effectiveness the 22R is the second-worst option available to you, and the 2S-C is the absolute worst. If you want to get decent performance out of a Corona and don't have an infinite budget you'll have to do an engine conversion to something modern and larger and/or turbocharged.

The BW gearbox and diff in the ST141 is p00. If you're serious about this you'll want an import RT142 which has a W5x gearbox, IRS and an F series diff. It might cost more than an ST141 but it saves you the hassle and expense of a gearbox and diff conversion later.

[Johnzoku]

ive found a rt142 im going to look at on the weekend hopefully, but needs 4th cyl vlaves done apperently

not really chasing huge power, around 120 ~ 130ish would do me fine, would that be possible keeping the 22r head, a ground cam, head porting and twin side drafts?
this will be rego'ed as a 2 seater and striped to in inch off the allowable by law as well so im hoping to lose around 100kg which i think is doable... i took 35kg out of my z11 with only the ac gear gone from the engine bay so that + sound deadening, rear interior, change the bumper reo and take all the ac gear out from the dash should get it there,

[GA61XX]

Try LC Engineering for your 22R parts..
Get new cam not a regrind..
21/22R's are very easy to free up power ... ( i've done a few )

cheers

[Pube]

Having owned both IRS RT142's and live axle RT142 id recommend a live axle RT142. I found the old design of the IRS version not to handle as well as the live axle. I think the only advantage of the IRS is the the strength of the F-series diff and the availability of LSD's such as truetracs. They get so much negative camber in the rear when you lower them the slightest bit which you cannot adjust with any off the shelf items. I found the IRS to oversteer when you put narrower width 'drift' stockies on them I think because the rear track is narrowed a bit too much.

The live axle is tried and tested. Just look at the ae86 or ae71 corollas, they seem to handle very well with the right setup. However, the borg warner diffs in the Xt14X diffs are shite so to upgrade can be expensive but well worth it I think. Much better handling and stability in my opinion.

The front end has more in common with early celicas as they have the same strut top as ra23/28's. Id choose an RT142 over an st141 as the RT's are already fuel injected and have a W55/6/7? gearbox already which would suit any future engine upgrade and has a 22RE which has enough power to have fun with.

My members ride link has some more info in there if you feel like having a look.

[Norbie]

They get so much negative camber in the rear when you lower them the slightest bit which you cannot adjust with any off the shelf items.

Not true, there are now camber adjustment kits available for MA61's which should work with the RT142 as well.

[Pube]

How much neg camber can be dialed out? Even still, Id still prefer live rear.

[Johnzoku]

its a few deg. isnt it? the weld on kits + there's the ecentric bushes the E30 guys use.

i dont mind the IRS, like i said i like the negative camber and its the same rear end as my Z11 so it doesnt bother me altho, if the one i pick up is live axle it wont bother me anyway... they seam to both have the good and bad points. the grip you get around corners in the rear end is awesome with -4 deg, but it does make sliding a bit harder to control.

humm... just doing some more searching and it seams the S13 front strut top PCD is similar to the RA23 and im guessing as well as T14... i know the MA61/Z10 has the same PCD also but its rotated so when you adj. camber your getting castor as well... so...

also, heres two other places that sell items for the 20/22R motor.
http://www.toyheadauto.com/Performan...omponents.html
http://www.paradiseracing.com/carbs.htm
^^^ these guys sell both carbs manifolds and cams
is the T14 the same as the Z10 or is the bolts rotated correctly?



ive looked over you members ride thread a few times but i might have to have a read

[too_quick]

RT142 =

Live axle Borg warner diff or IRS F series.
W55 in the manual versions.

ST141 =

Live axle Borg warner diff or IRS F series.
Borg warner manual gearbox.

I bought a pajero 8 inch diff for my RT142 off Chris Davey and he had it in a RT132 so a T series live axle from a RT132 will fit a ST141 or RT142. Also the RT142 live axle diff have the mounts in the same spot as KE70/AE71. So a T series live axle from a RT132 should fit a KE70/AE71. RT142 live axle disc brake diff should fit a KE70 which = disc arse end for a KE70.

Apparently ST142 and RT142 engine cross members fit KE70/AE71's as well, I was told but haven't tried.

IRS F series wont fit a live axle body.

Des

[GA61XX]

RT142 =

I bought a pajero 8 inch diff for my RT142 off Chris Davey and he had it in a RT132 so a T series live axle from a RT132 will fit a ST141 or RT142. Also the RT142 live axle diff have the mounts in the same spot as KE70/AE71. So a T series live axle from a RT132 should fit a KE70/AE71. RT142 live axle disc brake diff should fit a KE70 which = disc arse end for a KE70.

Apparently ST142 and RT142 engine cross members fit KE70/AE71's as well, I was told but haven't tried.

IRS F series wont fit a live axle body.

Des

I'm confused

I've been told tha the KE70 had different hangers... ??

& just finished building a MX13 diff' with RA60 hangers, MA61 LSD centre, & RT142 rear Disc's... ( building 2nd one now )

So IRS "F" centre will fit a "F" live axle..

cheers