Stay tuned - Page 54 - Toyota Yaris Forums

Jason@SportsCar · 01-23-2012, 12:15 PM

Quote:

Originally Posted by racerb

Sorry for continueing the hijack, but couldn't find any pictures of my steering column set-up. So here is a very simular set-up to mine on an MG, same basic deal hung verticle where mine hangs horizontal.

http://www.google.com/imgres?imgurl=...9QEwAw&dur=180

racerb

Similar to mine as well. Splined shaft with a quick release welded on. Simple, much lighter than stock, and further reduced the steering effort.

cali yaris · 01-23-2012, 12:29 PM

I heard good things happened this weekend...

Jason@SportsCar · 01-30-2012, 12:06 PM

Progress... Loynings head with Jun cams mated to the block.

If I did not like my neighbors I would fire it up and do the break-in tonight. It will just have to sit till the weekend.

33OH · 01-30-2012, 12:26 PM

We're not worthy.

Jason@SportsCar · 02-02-2012, 02:02 AM

Just got the car back together. Tomorrow we make noise.

Jason@SportsCar · 02-02-2012, 02:50 PM

It's alive. Now to schedule some dyno time.

thebarber · 02-02-2012, 03:07 PM

does it feel more powerful?

Jason@SportsCar · 02-02-2012, 03:17 PM

Quote:

Originally Posted by thebarber

does it feel more powerful?

My butt dyno could not tell as I sat in the car with the engine revving between 2000-3000 for half an hour breaking in the cams.

We cant exactly drive this on the street.

The dyno will show the difference, as will laps at Willow Springs during the next race.

Jason@SportsCar · 02-03-2012, 02:24 PM

On the dyno next Tuesday.

cali yaris · 02-03-2012, 02:37 PM

Excellent. Finally. Thank you.

ilikerice · 02-03-2012, 09:04 PM

Sorry, could you run by what else is done to this motor also along with the jun cams? Just as a reference.

Jason@SportsCar · 02-06-2012, 11:54 AM

Quote:

Originally Posted by ilikerice

Sorry, could you run by what else is done to this motor also along with the jun cams? Just as a reference.

The Production class rules are fairly restrictive to the newer cars like ours, but we can still open it up a little: intake/exhaust ports opened up to match intake/header to a depth of 1". Multi angle valve job. Head decked to get us closer to our 11-1 max compression ratio.

thebarber · 02-06-2012, 12:14 PM

how much did you have to take off the head?

Jason@SportsCar · 02-06-2012, 01:26 PM

Quote:

Originally Posted by thebarber

how much did you have to take off the head?

I have not seen the build sheet/bill yet.

Without being able to CC everything (I did not send the bottom end so they could not measure the piston volume) I am sure they went conservative. I know the pistons don't slap the valves, happy about that.

thebarber · 02-06-2012, 02:10 PM

Quote:

Originally Posted by Jason@SportsCar

I have not seen the build sheet/bill yet.

Without being able to CC everything (I did not send the bottom end so they could not measure the piston volume) I am sure they went conservative. I know the pistons don't slap the valves, happy about that.

lol

Jason@SportsCar · 02-08-2012, 12:37 PM

The results are in, the Jun cams are an improvement over the custom grind we had done for the 2010 season, but they are not magic.

With the combination of head work and cams we picked up 12hp when compared to the stock engine we ran in 2011. However, just like with the custom grind cams we lost Tq below 5000rpm when compared to the stock engine - fortunately in this case we only lost 3ft-lbs, where the 2010 cams lost around 18ft-lbs.

While I was not jumping for joy at the final numbers, I was happy to see the top end power match our 2010 numbers, while regaining most of our lost Tq. Additionally, the power band with the Jun cams is much broader than the custom grind was, we have nearly 1000 more usable RPMs than we did before. From 5500rpm on we have more HP and Tq than either of the previous setups offered, and the power delivery is smooth.

If you are thinking about the Jun 9.5 cams keep in mind these are not a direct bolt-in. Your head will need relief cuts to clear the lobes, and without engine management you will not see the full gains.

Overall I give them a thumbs up, but expect to spend about $2k between the cams and head work.

CrankyOldMan · 02-08-2012, 02:17 PM

So this--combined with reverting the final drive--should make you much more competitive than last season? How's the gearbox coming along?

ilikerice · 02-08-2012, 02:18 PM

On behalf of everyone at yarisworld, thank you. lol

01-23-2012, 12:29 PM	#956
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	I heard good things happened this weekend... __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

01-30-2012, 12:06 PM	#957
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	Progress... Loynings head with Jun cams mated to the block. If I did not like my neighbors I would fire it up and do the break-in tonight. It will just have to sit till the weekend. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-02-2012, 02:02 AM	#959
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	Just got the car back together. Tomorrow we make noise. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-02-2012, 02:50 PM	#960
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	It's alive. Now to schedule some dyno time. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-02-2012, 03:07 PM	#961
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	does it feel more powerful? __________________

01-30-2012, 12:26 PM	#958
33OH Drives: '08 Yaris Join Date: Oct 2008 Location: Dover, Ohio Posts: 7,606	We're not worthy.

02-03-2012, 02:24 PM	#963
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	On the dyno next Tuesday. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-03-2012, 02:37 PM	#964
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Excellent. Finally. Thank you. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-03-2012, 09:04 PM	#965
ilikerice Drives: 2010 black yaris Join Date: Oct 2010 Location: savannah, ga Posts: 2,868	Sorry, could you run by what else is done to this motor also along with the jun cams? Just as a reference. __________________ -Derrick- "Racing is important to men who do it well. When you're racing... It's life. Anything that happens before or after, is just waiting."

02-06-2012, 12:14 PM	#967
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	how much did you have to take off the head? __________________

02-08-2012, 12:37 PM	#970
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	The results are in, the Jun cams are an improvement over the custom grind we had done for the 2010 season, but they are not magic. With the combination of head work and cams we picked up 12hp when compared to the stock engine we ran in 2011. However, just like with the custom grind cams we lost Tq below 5000rpm when compared to the stock engine - fortunately in this case we only lost 3ft-lbs, where the 2010 cams lost around 18ft-lbs. While I was not jumping for joy at the final numbers, I was happy to see the top end power match our 2010 numbers, while regaining most of our lost Tq. Additionally, the power band with the Jun cams is much broader than the custom grind was, we have nearly 1000 more usable RPMs than we did before. From 5500rpm on we have more HP and Tq than either of the previous setups offered, and the power delivery is smooth. If you are thinking about the Jun 9.5 cams keep in mind these are not a direct bolt-in. Your head will need relief cuts to clear the lobes, and without engine management you will not see the full gains. Overall I give them a thumbs up, but expect to spend about $2k between the cams and head work. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-08-2012, 02:17 PM	#971
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	So this--combined with reverting the final drive--should make you much more competitive than last season? How's the gearbox coming along?

02-08-2012, 02:18 PM	#972
ilikerice Drives: 2010 black yaris Join Date: Oct 2010 Location: savannah, ga Posts: 2,868	On behalf of everyone at yarisworld, thank you. lol __________________ -Derrick- "Racing is important to men who do it well. When you're racing... It's life. Anything that happens before or after, is just waiting."

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