Cosworth TJ V10 Piston

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
Maritimer
16
Joined: Wed Sep 06, 2017 8:45 pm
Location: Canada

Re: Cosworth TJ V10 Piston

Post by Maritimer » Sat Mar 23, 2019 5:54 am

humble sabot wrote:
Sat Mar 23, 2019 5:18 am
24? That's fully double of any installation I've actually seen. I'd love to know what that actually looks like.
Take your 6 original jets and put four outlet nozzles on each of them, boom :lol:

saviour stivala
-12
Joined: Wed Apr 25, 2018 11:54 am

Re: Cosworth TJ V10 Piston

Post by saviour stivala » Sat Mar 23, 2019 11:02 am

Maritimer wrote:
Sat Mar 23, 2019 5:54 am
humble sabot wrote:
Sat Mar 23, 2019 5:18 am
24? That's fully double of any installation I've actually seen. I'd love to know what that actually looks like.
Take your 6 original jets and put four outlet nozzles on each of them, boom :lol:
Spot-on. “Honda V8 Development of piston oil cooling jets”;- In the initial stages 4 and 6 hole were used in the oil jets. The flow rate injected was higher than 10-l/min. as development proceeded the oil flow rate was steadily increased by means of increasing the diameter of the jets holes from 2mm, but with the use of MMC pistons this modification was not needed. When MMC pistons were banned and returning to the 2000 aluminum pistons crack were getting into a big problem with the increased engine speeds. Increasing the volume of oil flow through the jets simply increased friction. An interim measure was retarding the ignition by 6.5 degrees which resulted in a decreased output. What was needed was an even spread of cooling oil over a wide area which was achieved by the 6 hole per jet per piston being increased to 12 holes and finally to 24 holes.

e36jon
43
Joined: Mon Apr 25, 2016 1:22 am
Location: California, USA

Re: Cosworth TJ V10 Piston

Post by e36jon » Sat Mar 23, 2019 4:51 pm

Image

hardingfv32
30
Joined: Sun Apr 03, 2011 6:42 pm

Re: Cosworth TJ V10 Piston

Post by hardingfv32 » Sat Mar 23, 2019 7:13 pm

What are the words inlet and exhaust describing in the upper part of the illustration?

Brian

e36jon
43
Joined: Mon Apr 25, 2016 1:22 am
Location: California, USA

Re: Cosworth TJ V10 Piston

Post by e36jon » Sat Mar 23, 2019 8:17 pm

They are referring to the inlet valve side of the piston and the exhaust valve side of the piston.

And a belated 'sorry' for the semi-hijack of a truly excellent thread.

Jon

saviour stivala
-12
Joined: Wed Apr 25, 2018 11:54 am

Re: Cosworth TJ V10 Piston

Post by saviour stivala » Sat Mar 23, 2019 10:05 pm

e36jon wrote:
Sat Mar 23, 2019 8:17 pm
They are referring to the inlet valve side of the piston and the exhaust valve side of the piston.

And a belated 'sorry' for the semi-hijack of a truly excellent thread.

Jon
'Semi-hijack???' Solid and official technical information is always welcome. just one point if you don't mind. you omitted mentioning that that those piston/oil cooling jets illustrations pertains to Honda F1 V8 engine.

voice_of_reason
0
Joined: Fri Apr 12, 2019 4:46 pm

Re: Cosworth TJ V10 Piston

Post by voice_of_reason » Fri Apr 12, 2019 5:05 pm

Interesting post.
Last edited by voice_of_reason on Sat Apr 20, 2019 3:21 pm, edited 1 time in total.

ACRO
1
Joined: Thu Sep 21, 2006 9:25 pm

Re: Cosworth TJ V10 Piston

Post by ACRO » Sun Apr 14, 2019 9:53 am

maybe i missed it in the thread , but what is the bore of the tj piston ?

best regards

voice_of_reason
0
Joined: Fri Apr 12, 2019 4:46 pm

Re: Cosworth TJ V10 Piston

Post by voice_of_reason » Tue Apr 16, 2019 12:58 pm

ACRO wrote:
Sun Apr 14, 2019 9:53 am
maybe i missed it in the thread , but what is the bore of the tj piston ?

best regards
Early specs of the engine had 95mm bore.
Some later specs were built with 96mm bore bottom ends.

ACRO
1
Joined: Thu Sep 21, 2006 9:25 pm

Re: Cosworth TJ V10 Piston

Post by ACRO » Sun Apr 28, 2019 10:03 am

thanks much for the info ! do you have the bore of the cosworth cr3 v10 ( ck family ) ?

saviour stivala
-12
Joined: Wed Apr 25, 2018 11:54 am

Re: Cosworth TJ V10 Piston

Post by saviour stivala » Fri May 31, 2019 6:58 pm

ACRO wrote:
Sun Apr 28, 2019 10:03 am
thanks much for the info ! do you have the bore of the cosworth cr3 v10 ( ck family ) ?
Cosworth CR-3 (external designation) CK family (internal designation) = CK 2001 used by Jaguar R2.
Cosworth CR-3 (external designation) CK family (internal designation) = CK 2002 used by Jaguar R3. "from Canada CR-4 (external designation) LK 2002 family (internal designation).
Cosworth 2005 TJ005 (external designation) TJ 2005 (internal designation) used by Red Bull RB1, this was series 10 engine, had a 95mm bore and a stroke of 42mm.