Toyspeed.org.nz Message Board

by **strx7** » Thu Apr 23, 2009 1:59 pm

Altezza 3SGE has 11.5:1 compression
ST202 3SGE has 10.3:1 compression

Yet................ the altezza pistons are basically flat top, where the ST202 piston has a nice 'mountain range' running down the middle of it.

Are A) Altezza Conrods Longer than ST202 items? or
B) is the Altezza Combustion chamber a VERY different shape and runs a narrower vavle angle????

all info greatly appreciated

by **xsspeed** » Thu Apr 23, 2009 2:03 pm

check that you are comparing both 'beams' models

Altezza 3sge is beams

Celica 3sge will be beams if from a SSIII model

Alternatively get the specs for a 1997+ caldina GT (non turbo 3sge beams) - code: ST215G (gtt is ST215W)

by **strx7** » Thu Apr 23, 2009 2:53 pm

I am comparing 3rd gen 3SGE non VVTi against Altezza 3SGE dual VVTi

by **sergei** » Thu Apr 23, 2009 2:56 pm

strx7 wrote:I am comparing 3rd gen 3SGE non VVTi against Altezza 3SGE dual VVTi

Non VVTi vs VVTi are completely different heads (that includes combustion chamber).

by **xsspeed** » Thu Apr 23, 2009 3:55 pm

Pretty sure sergei is correct, not that it answers your question

by **MercuryFree** » Thu Apr 23, 2009 4:24 pm

xsspeed wrote:Celica 3sge will be beams if from a SSIII model

Unless it's a '96...they made SS3's in '96 but the BEAMs didn't get put in til '97.

by **xsspeed** » Thu Apr 23, 2009 4:49 pm

Oh ok, I thought the ssIII was the 97 model but there you have it.

by **strx7** » Thu Apr 23, 2009 5:42 pm

sergei wrote:
strx7 wrote:I am comparing 3rd gen 3SGE non VVTi against Altezza 3SGE dual VVTi

Non VVTi vs VVTi are completely different heads (that includes combustion chamber).

Anyone got photo's of a 3SGE VVTi combustion chamber???

by **nz_climber** » Thu Apr 23, 2009 9:41 pm

I remember seeing some photos of head and combustion chambers.. either here or at the NZ/AUS Altezza forum from when Leiden was building his turbo beams engine, so try searching both for them as I can't remember where they are at the moment...

by **Mr Revhead** » Thu Apr 23, 2009 10:17 pm

arnt the pin heights different?

by **Celica RA45** » Thu Apr 23, 2009 10:20 pm

gen 3 has dome pistons and a wider valve angle for 10.4 to 1 comp
altezza has a tighter valve angle and taller head auto motors are 11to 1 manual altezza 11.5 to 1 comp
easy way to see gen 3 cam pulleys are 25 mm apart
altezza 5mm apart and cumbustion chamber is 33cc
gen 3 is 60cc or there abouts
crank same, rod length same, bore and stroke same ,

by **strx7** » Fri Apr 24, 2009 8:58 am

Mr Revhead wrote:arnt the pin heights different?

Nope I have a good pic of both pistons sharing 1 gudgeon pin for comparison i'll post it up

by **strx7** » Fri Apr 24, 2009 9:05 am

Celica RA45 wrote:gen 3 has dome pistons and a wider valve angle for 10.4 to 1 comp
altezza has a tighter valve angle and taller head auto motors are 11to 1 manual altezza 11.5 to 1 comp
easy way to see gen 3 cam pulleys are 25 mm apart
altezza 5mm apart and cumbustion chamber is 33cc
gen 3 is 60cc or there abouts
crank same, rod length same, bore and stroke same ,

Thanks thats what I was wanting to know. I figured the CC had to be approx half to get that compression ratio

by **RomanV** » Fri Apr 24, 2009 9:45 am

Interesting picture!

Would be sweet if a standard gen 3 piston could be used to bump the compression by what looks like... a lot, haha.

by **rollaholic** » Fri Apr 24, 2009 10:11 am

sounds like you would run into serious trouble with valve angle though

not to mention that massive mountain range possibly hitting the top of the puny CC on vvti head haha

not to mention the compression would insane

by **strx7** » Fri Apr 24, 2009 10:48 am

You could skim the top of the mountain range a bit to get required clearances.

I'm wanting to put the 3rd gen 3sge pistons into a 2JZGE to get around 12:1 compression.

by **Celica RA45** » Sat Apr 25, 2009 2:00 am

that 10.4 to 1 looks like my 13.5 to 1 piston that i use in my race beams motor ,but also i have 8mm deep valve fly cuts for vvti still as well

by **KinLoud** » Sat Apr 25, 2009 8:50 am

I have several sets of 3sge and 3sgte pistons including a set of (what I think is) gen3 3sge pistons. Let me know if you want any.

Ken
Auck
021 408 863

by **xsspeed** » Sat Apr 25, 2009 9:59 am

Celica RA45 wrote:that 10.4 to 1 looks like my 13.5 to 1 piston that i use in my race beams motor ,but also i have 8mm deep valve fly cuts for vvti still as well

Is that a single vvti beams or dual vvti?

Is there a difference between pistons and heads (combustion chambers port size, valve size etc) for the single vvti and dual vvti motors?

by **strx7** » Sat Apr 25, 2009 12:59 pm

KinLoud wrote:I have several sets of 3sge and 3sgte pistons including a set of (what I think is) gen3 3sge pistons. Let me know if you want any.

Ken
Auck
021 408 863

the piston marked 10.3 in the pic is 3rd gen 3sge ST202 Celica 1994-1995ish. if it looks the same, thats what it is. they have 88460 cast into the inside of the skirt. If you take note of what numbers they have cast into each of the pistons you have ken and send them to me on a PM i'll run them thru the EPC and tell you what they are all out of.

Toyspeed.org.nz Message Board

calling 3SGE Experts...

calling 3SGE Experts...

Who is online