The 18R-GTE reference manual ...

[RA23]

To return back to the original topic:

Apparently The Witzl and Norbie are planning/working on turbo 18RGE's. Has anyone actually completed one? On the old forum there was people100 who was going on about it, but apparently sold all the bits (too hard?).

Anyway, I found some info about a 2.4L turbo18RG (no E!) in an RA28:



specs:
bore 92.5 mm, 22RE pistons
16R rods
3.5mm stroker crank
comp ratio: 7:1

18RGEU head
TRD inner valve springs

HKS turbo kit
blow through solexes
water-air heat exchanger, mech pump

Garrett T04 turbo with a back-cut turbine
32mm RotoMaster external wastegate
boost pressure limited to 21 psi
3" exhaust

320 flywheel hp (no dyno figure)

[ra_28]

Yeah i completed one starting form the bottom it consisted of

* lightened flywheel
* knifed crank
* standard rods
* hypoid pistons (soon to be forged)
* o'ring block
* flowed head
* head studs
* 2.15mm thick head gasket
* standard cams (trying high lift short duration this time)
* shit loking exhaust manifold but did the job
* to4b garret turbo
* standard intake manifold
* 550 cc bosh injectors
* ems dual sport computer
* msd ingition
* bosh super 4 plugs
* 24 psi boost and wants more

Thats about it i think
ALEX

[joecoolmk2]

blowthrough solexes, aarghhhhhh are you sure?

that blue pipe is seriously squashed up, or is he running 50psi?

why don't you just run the turbo on the very end of the xtractors? that's what a lot of race cars do(like the toyota 7, with 800hp).

that's supposed to give good response, and a more consistent exhaust pressure.

[ra_28]

Yep their blow through on 21 psi

[RA23]

Yeah i completed one starting form the bottom it consisted of

* lightened flywheel
..
..
* 24 psi boost and wants more

Thats about it i think
ALEX

Sounds good!
What sort of performance did you get?
Pics?

[thechuckster]

That's Cliff's Hansen's car - you can meet him at most Toyota Car Club meeting in brisbane. Car is complete again except for 1 guard.

[Norbie]

Cliff's car is very old school. Blow through carbies and super low compression, just like they did in the early 80's (anyone remember the Pulsar ET and Sigma turbo?). Don't get me wrong, the car is well cool and undoubtedly the cleanest RA28 you'll find anywhere, but from a performance perspective it's not something you'd want to copy in 2006.

Justen Simpson was the man for turbo 18R-G's back in the day. He's the mad scientist behind the twin turbo V8 Celica GT4 you might have seen in various magazines of late, but in the 90's he had an RA23 with a very serious 18R-G and a TO4 hanging off the side. From memory he had the thing running 12's back when most people in the 4 cylinder scene were playing around with downdraughts Webers on their Escort or Gemini.

Witzl and I are taking things to the next level though. 12 second quarter mile? Bah! My shitty 84 Supra will do that, I want to go really fast.

[The Witzl]

Indeed if we are talking 18R-G turbos, none can forget Justen's old RA23! It would still be a very competitive package to this day - yes it's true, he was running mid 12's with it....

There is really only one 18R-G turbo i know in australia at the moment that's going considerably faster.... and thats the insane KE20 up in QLD running 10s.

[RA23]

Witzl and I are taking things to the next level though. 12 second quarter mile? Bah! My shitty 84 Supra will do that, I want to go really fast.

What's your plan? Straigt drag car, or something for the street?
Mega$ or something sorta affordable? Are you and Witzl working together on one engine or are you both working on your own and only exchanging info?

[The Witzl]

We're each building our own 18r-gte engine, but they are both being built by same man.... so we're building them pretty similar internally.

THe main differences are head, turbo, manifolds, ecu... and other bits.

Well mines not going to be an all out drag car, but im hoping it will be damn fast. As for the costs... well it depends on what you consider mega $$$. I'd say it's affordable, yes, but the man hours involved with design and sourcing and testing and eveything else is worth a small fortune!!

[RA23]

We're each building our own 18r-gte engine, but they are both being built by same man.... so we're building them pretty similar internally.

THe main differences are head, turbo, manifolds, ecu... and other bits.

Very interesting, lots of questions come up:
-are you keeping it at 2L? what compression ratio, how will you cool the pistons?
-wil you MS it?
-what boost level are you aiming for?

I hope you can share some more info with us, or is it all classified? How far away are you from running?

[The Witzl]

will stay close to 2L
compression in the 8's to 1
piston cooling.... how about a good tune?
no. Autronic SM4
eleventy billion millibars

[Mr DOHC]

Indeed if we are talking 18R-G turbos, none can forget Justen's old RA23! It would still be a very competitive package to this day - yes it's true, he was running mid 12's with it....

There is really only one 18R-G turbo i know in australia at the moment that's going considerably faster.... and thats the insane KE20 up in QLD running 10s.

9's now q2eldkbcoij2vb2v

[JustenGT8]

Jeez guys if those comments didn't sound likie you were referring to that old hermit on the hill i'd feel all gushy :-)

As far as i know i had the 1st serious EFI turbo 18RG but Oz is a big place so not making any claims. It was serious where it needed to be so forgies, well sorted (but stock) bottom end, light billet flywheel, bigish cams, TRD oil pump, big sump, stock HG.

Would take 18psi and 8000rpm all day. Up the boost to 22psi and after a wee while (6 months) you'd be looking at a BHG as the stock head bolts would stretch. All it really needed was a set of ARP head studs which weren't available at the time. On a coupla of occasions it 'accidentally' saw 30psi and didn't even blink...however, i shat myself as the rears dissolved in tyre smoke.

Used to run high twelves around the old Wakefield Park circuit so possibly good for 10's on the current circuit. Best 1/4 time was 12.8@112mph with the stiff circuit suspension...soften the rear and a 12.5 is more likely.

Anyways a great engine that only gave me HG probs because of my greed for boost.

If i did it again the changes i would make would be minimal. Higher comp ratio, i would run 9:1, arp head studs, a fancier ECU and of course one of the newer tech turbos. 400hp flywheel would be a walk in the park.

[RA23]

Anyways a great engine that only gave me HG probs because of my greed for boost.

If i did it again the changes i would make would be minimal. Higher comp ratio, i would run 9:1, arp head studs, a fancier ECU and of course one of the newer tech turbos. 400hp flywheel would be a walk in the park.

Thanks for the info Justen, thats very useful. I hope I can get that sort of performance from my heap of parts one day. A few questions if you don't mind: What pistons did you use? and would you o-ring the block to prevent BHG? How street drivable was the Celica with this beast?