www.gt4dc.co.uk
Maintain, Modify and DRIVE your GT-Four


It is currently Tue Oct 07, 2025 9:30 am




Post new topic Reply to topic  [ 23 posts ]  Go to page 1, 2  Next
Author Message
PostPosted: Sat Nov 07, 2009 7:43 pm 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
A question for who has TTE rods in his engine, and is using the car in track and not for 10-seconds "races":
where did you put your rpm limitter?

I'm asking because last Sunday I used for the first time the car in track after the latest mods, and at 7600 it's still pushing fecking hard...

Wolf

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Sat Nov 07, 2009 11:30 pm 
Offline
Club Staff
User avatar

Joined: Wed Jul 13, 2005 12:06 am
Posts: 4743
Location: Perth, Western Australia
Car Model: ST205
I've got TTE rods but decided not to fit them as my engine spec is now 500+bhp. I've used Carillo rods instead. The TTE rods were designed for rally use (~400bhp @ ~7000rpm) so I wouldn't be confident of using them in an engine built for circuit use where the rev limit and power output is higher.

_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp


Top
 Profile  
 
 Post subject:
PostPosted: Sun Nov 08, 2009 9:21 am 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
TrackToyFour wrote:
I've got TTE rods but decided not to fit them as my engine spec is now 500+bhp. I've used Carillo rods instead. The TTE rods were designed for rally use (~400bhp @ ~7000rpm) so I wouldn't be confident of using them in an engine built for circuit use where the rev limit and power output is higher.



Mmm... I'm using them till 2007 and never had a problem even if my bhp is MUCH higher and I always used them to 7600 rpm.

AFAIK, and as far as I've seen when I installed them, the TTE seems to me to be the stock (100% SAME design) with, maybe, different material...
so would be very strange if the stock could reach 7500 rpm and the TTE no...

Moreover I know for sure they are using here these rods even in de-restrictored 3SGTE for ice-races (for example Yaris with 450 bhp).

BTW, it sounds correct that if approaching to 8000 rpm, it would be better to change to other stuff...

Wolf

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Sun Nov 08, 2009 11:45 pm 
Offline
Club Staff
User avatar

Joined: Wed Jul 13, 2005 12:06 am
Posts: 4743
Location: Perth, Western Australia
Car Model: ST205
Yep, the rods look pretty much the same as the OEM ones. Like you say I think the material must be upgraded. The finish is still pretty rough so before using them I'd probably get them shot-peened, polished etc.

_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 9:55 am 
Offline
WRC
User avatar

Joined: Tue Dec 09, 2008 6:51 pm
Posts: 1397
Location: Austria
Car Model: None
Hi,

more surface can transfer heat better :)

this is why i'am not a fan of painting the block and head

greetz

_________________
KEEP COOL UNDER PRESSURE
Image
street legal?.....perhaps in tschibuti


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 10:27 am 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
Sunny wrote:
Hi,

more surface can transfer heat better :)



???

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 11:33 am 
Offline
WRC
User avatar

Joined: Tue Dec 09, 2008 6:51 pm
Posts: 1397
Location: Austria
Car Model: None
Hi,

a rough surface like the head-cover can transfer heat better against a polished as it has more surface

here a extreme example:

on top a rough surface, and on buttom a polished

Image

greetz

_________________
KEEP COOL UNDER PRESSURE
Image
street legal?.....perhaps in tschibuti


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 11:42 am 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
Sunny wrote:
Hi,

a rough surface like the head-cover can transfer heat better against a polished as it has more surface

here a extreme example:

on top a rough surface, and on buttom a polished

Image

greetz



Sunny... believe me... I perfectly know relationship between surface and temp transfer...

I don't understand relationship with rods and limitter

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 12:14 pm 
Offline
WRC
User avatar

Joined: Tue Dec 09, 2008 6:51 pm
Posts: 1397
Location: Austria
Car Model: None
Hi Wolf,

ok 8)

greetz

_________________
KEEP COOL UNDER PRESSURE
Image
street legal?.....perhaps in tschibuti


Top
 Profile  
 
 Post subject:
PostPosted: Mon Nov 09, 2009 7:42 pm 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
Other meat for the BBQ:

Wolf:
Mr. XXX,
talking about the TTE connecting rods (Japanese ones) for ST205, I need to know their maximum safe rpm limit for track use.
Thank you, regards.


Mr. XXX:
Hello Sir
Maximum is 8500 RPM
With kind regards

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Tue Nov 10, 2009 12:05 pm 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
http://www.youtube.com/watch?v=njbj6xeYCoU

I definitely need to raise up a bit the limitter... :D

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Tue Nov 10, 2009 12:26 pm 
Offline
Club Staff
User avatar

Joined: Thu Jul 14, 2005 12:44 pm
Posts: 4067
Location: drinking devil fuel
Car Model: ST205
Balancing and also piston selection will play a major role in RPM limit too

e.g AlBe (Aluminium Berillium or "Unobtainium" to the common person) pistons of 2 ring slipper racing spec would probably double the rev limit due to their ridiculously low mass


Top
 Profile  
 
 Post subject:
PostPosted: Tue Nov 10, 2009 1:56 pm 
Offline
Group N
User avatar

Joined: Sat Apr 01, 2006 7:43 pm
Posts: 398
Location: Parma - Italy
Car Model: None
Yes, it absolutely has sense that an inertial mass reduction will decrease rods' stress.
I have modified wrc pistons in, so rpm limit must be higher than with stock pistons, even if i remember they were not so light as the as the cp i had in the past...

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm


Top
 Profile  
 
 Post subject:
PostPosted: Tue Nov 10, 2009 11:19 pm 
Offline
Club Staff
User avatar

Joined: Wed Jul 13, 2005 5:10 pm
Posts: 1953
Location: Sunny Fareham, UK
Car Model: ST205
Heavy rods and heavy pistons = same stress on con rods etc at lower rpm than lighter pistons and rods.

I have a formula to work out the stress placed on the con rod for fitting different weight pistons and rods.

This is in an excel spreadsheet, anyone interested then drop me a line with your email address and I'll send it over for all you geeks to look at/use :P

_________________
Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
_______________________________________
Turbocharging - the replacement for displacement


Top
 Profile  
 
 Post subject:
PostPosted: Wed Nov 11, 2009 10:10 am 
Offline
WRC
User avatar

Joined: Tue Dec 09, 2008 6:51 pm
Posts: 1397
Location: Austria
Car Model: None
Hi Kris,

interested :)

gasthof-hackl@gmuendnet.at

greetz
Alex

_________________
KEEP COOL UNDER PRESSURE
Image
street legal?.....perhaps in tschibuti


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 posts ]  Go to page 1, 2  Next


Who is online

Users browsing this forum: Google Adsense [Bot] and 11 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group