Hi,
more surface can transfer heat better
this is why i'am not a fan of painting the block and head
greetz
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| TTE rods, track use and limitter http://www.gt4dc.co.uk/forum/viewtopic.php?f=13&t=3275 |
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| Author: | Wolf_Tm [ Sat Nov 07, 2009 7:43 pm ] |
| Post subject: | TTE rods, track use and limitter |
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 |
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| Author: | TrackToyFour [ Sat Nov 07, 2009 11:30 pm ] |
| Post subject: | |
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. |
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| Author: | Wolf_Tm [ Sun Nov 08, 2009 9:21 am ] |
| Post subject: | |
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 |
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| Author: | TrackToyFour [ Sun Nov 08, 2009 11:45 pm ] |
| Post subject: | |
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. |
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| Author: | Sunny [ Mon Nov 09, 2009 9:55 am ] |
| Post subject: | |
Hi, more surface can transfer heat better
this is why i'am not a fan of painting the block and head greetz |
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| Author: | Wolf_Tm [ Mon Nov 09, 2009 10:27 am ] |
| Post subject: | |
Sunny wrote: Hi,
more surface can transfer heat better ??? |
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| Author: | Sunny [ Mon Nov 09, 2009 11:33 am ] |
| Post subject: | |
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 
greetz |
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| Author: | Wolf_Tm [ Mon Nov 09, 2009 11:42 am ] |
| Post subject: | |
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 greetz Sunny... believe me... I perfectly know relationship between surface and temp transfer... I don't understand relationship with rods and limitter |
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| Author: | Sunny [ Mon Nov 09, 2009 12:14 pm ] |
| Post subject: | |
Hi Wolf, ok 
greetz |
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| Author: | Wolf_Tm [ Mon Nov 09, 2009 7:42 pm ] |
| Post subject: | |
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 |
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| Author: | Wolf_Tm [ Tue Nov 10, 2009 12:05 pm ] |
| Post subject: | |
http://www.youtube.com/watch?v=njbj6xeYCoU I definitely need to raise up a bit the limitter... 
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| Author: | two_OH_five [ Tue Nov 10, 2009 12:26 pm ] |
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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 |
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| Author: | Wolf_Tm [ Tue Nov 10, 2009 1:56 pm ] |
| Post subject: | |
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... |
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| Author: | Kris [ Tue Nov 10, 2009 11:19 pm ] |
| Post subject: | |
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 
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| Author: | Sunny [ Wed Nov 11, 2009 10:10 am ] |
| Post subject: | |
Hi Kris, interested
gasthof-hackl@gmuendnet.at greetz Alex |
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