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TrackToyFour

Post subject:

Posted: Tue Feb 08, 2011 7:46 pm

Club Staff

Joined: Wed Jul 13, 2005 12:06 am
Posts: 4743
Location: Perth, Western Australia
Car Model: ST205

Wolf_Tm wrote:

Hi Don, may I ask you how you've seen this?

Personal experience during a track day on the Silverstone National circuit. Lost most of my coolant out the top of the expansion tank on entry into Copse corner. Made life interesting and for those following :twisted:

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Don
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1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
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Wolf_Tm

Post subject:

Posted: Tue Feb 08, 2011 8:02 pm

Group N

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

TrackToyFour wrote:

Wolf_Tm wrote:

Hi Don, may I ask you how you've seen this?

Ah ok, so you thought that this could have been the cause of your problem.
I was just curious if you got water pump cavitation with an in room experiment...

A bit strange anyway as I never got this problem in Monza (looooooong straights...), but i do love the ewp concept!

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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
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TrackToyFour

Post subject:

Posted: Tue Feb 08, 2011 8:08 pm

Club Staff

Joined: Wed Jul 13, 2005 12:06 am
Posts: 4743
Location: Perth, Western Australia
Car Model: ST205

The long straights at Monza are probably like the Silverstone GP circuit. They mean that the engine gets a chance to rest and cool down as its not pulling max rpm all the way down the straight. The short circuit is tight ans twisty so I was bouncing the engine off the limiter a lot of the time.

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Wolf_Tm

Post subject:

Posted: Tue Feb 08, 2011 8:25 pm

Group N

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

TrackToyFour wrote:

The long straights at Monza are probably like the Silverstone GP circuit. They mean that the engine gets a chance to rest and cool down as its not pulling max rpm all the way down the straight.

Not in Monza! :lol:

And in fact is a bad track for our car...
the main straight comes after a long 3th & 4th gear parabolic curve, and it's long 1.2 kms!
And at the end you're close to tacho 290 kmh so the engine stays there for long time...

But as you think, we all could have cavitation problems without knowing... and that's bad for sure...

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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

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Wolf_Tm

Post subject:

Posted: Wed Feb 09, 2011 9:04 am

Group N

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

TrackToyFour wrote:

Wolf_Tm wrote:

Hi Don, may I ask you how you've seen this?

Hi Don,
which was your rad cap rating at that time?
Were you using any special liquid as coolant?

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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

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two_OH_five

Post subject:

Posted: Wed Feb 09, 2011 10:08 am

Club Staff

Joined: Thu Jul 14, 2005 12:44 pm
Posts: 4067
Location: drinking devil fuel
Car Model: ST205

IIRC
1.5 bar TRD radcap on a KOYO alloy rad running Forlife coolant

I personally think it was an oddity. Quite a few of us have run the same track without issue as has Don. I wonder if a bit of debris prevented full closure of the cap causing pressure loss and a cascade failure

I still prefer the ewp and restrictor/controller though. It gives a much more predictable delta across the engine

I believe Adrian Smith had cavitation issues with his 200mph screamer

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Wolf_Tm

Post subject:

Posted: Wed Feb 09, 2011 10:32 am

Group N

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

two_OH_five wrote:

IIRC
1.5 bar TRD radcap on a KOYO alloy rad running Forlife coolant

Isn't the TRD 1.3?

Quote:

I personally think it was an oddity. Quite a few of us have run the same track without issue as has Don. I wonder if a bit of debris prevented full closure of the cap causing pressure loss and a cascade failure

Yes... but it is always good to investigate deeper...

Quote:

I still prefer the ewp and restrictor/controller though. It gives a much more predictable delta across the engine

Yes, I love the EWP.. but the next free space is out of my engine bay!

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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

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Diceman

Post subject:

Posted: Wed Feb 09, 2011 11:52 am

Club Staff

Joined: Wed Jul 13, 2005 6:54 pm
Posts: 3486
Location: On Top
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Quote:

Yes, I love the EWP.. but the next free space is out of my engine bay!

better stick it in the boot with the radiator :-)

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bozo-merlin

Post subject:

Posted: Wed Feb 09, 2011 12:45 pm

Clubman

Joined: Sat Aug 25, 2007 9:14 am
Posts: 142
Location: France
Car Model: None

Wolf_Tm wrote:

Isn't the TRD 1.3?

Koyo rad use WTA cap style (never remember type 1 or 2, A or B, S or N, ...)

TRD do the 1.3 (for SW20) and 1.5 (for ST205 WTA) and you can use both on the koyo.

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Wolf_Tm

Post subject:

Posted: Wed Feb 09, 2011 12:58 pm

Group N

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

Diceman wrote:

Quote:

Yes, I love the EWP.. but the next free space is out of my engine bay!

better stick it in the boot with the radiator :-)

Ah ah ah

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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

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Wolf_Tm

Post subject:

Posted: Wed Feb 09, 2011 1:02 pm

Group N

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

bozo-merlin wrote:

Wolf_Tm wrote:

Isn't the TRD 1.3?

Koyo rad use WTA cap style (never remember type 1 or 2, A or B, S or N, ...)

TRD do the 1.3 (for SW20) and 1.5 (for ST205 WTA) and you can use both on the koyo.

S type...
Ah ok, i thought max trd cap opening pressure, any type, was 1.3!

_________________
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

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banzaibaz

Post subject:

Posted: Wed Feb 09, 2011 7:25 pm

Group N

Joined: Wed Oct 20, 2010 8:37 pm
Posts: 285
Location: uk southampton
Car Model: ST205

TRD do the 1.3 (for SW20) and 1.5 (for ST205 WTA) and you can use both on the koyo.[/quote]

Ive got a TRD which states 1.5 same as the blitz on my c/c as-well is this as high as they go ?

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Sunny

Post subject:

Posted: Wed Feb 09, 2011 9:01 pm

WRC

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

Hi,

a other option is to call wever for TTE ones

AM35703 1,5bar
AM05020 2,1bar
AM46680 2,8bar

i don't know S or N type

outside the engine bay LOL :lol:

greetz

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Meurz

Post subject:

Posted: Wed Feb 09, 2011 9:06 pm

Junior WRC

Joined: Sun Nov 27, 2005 8:43 pm
Posts: 998
Location: NLD
Car Model: None

Or just weld it shut!

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Turbocelica.nl | ST185 CS restoration and full rebuild

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Muddy Water

Post subject:

Posted: Wed Feb 09, 2011 9:32 pm

Club Staff

Joined: Mon Mar 26, 2007 5:53 pm
Posts: 1736
Location: Another Shire County
Car Model: ST185

The homework for radiator caps has already been done :wink:

The search function on this site is amazing :lol:

http://gt4dc.co.uk/forum/viewtopic.php?t=2614

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