prius piston swap - Page 5 - Toyota Yaris Forums

cali yaris · 04-10-2013, 01:12 PM

^ At $800 each (x2 !), they are pricey. Easier and cheaper to regrind camshafts here. We're doing a set for a customer now.

JustDidIt · 04-10-2013, 01:26 PM

Quote:

Originally Posted by cali yaris

^ At $800 each (x2 !), they are pricey. Easier and cheaper to regrind camshafts here. We're doing a set for a customer now.

REALLY? You guys do regrinds? Didn't see that service available online. If we were looking at the JUN cam profile, Duration (mm): 66 (264) Lift (mm): 9.5 (race profile) OR Duration (mm): 63 (252) Lift (mm): 9.0 (street profile), what could something like this run? Rough estimate?

Quote:

Originally Posted by fast2882

for racing camshaft, Jun auto already release a higher lift and timing camshaft, in indonesia, we use these cam when we race.

+$1000 for cams seems REALLYdiculous for our lil 1.5...

Jason@SportsCar · 04-10-2013, 02:25 PM

Quote:

Originally Posted by cali yaris

^ At $800 each (x2 !), they are pricey. Easier and cheaper to regrind camshafts here. We're doing a set for a customer now.

$800 x 2? I paid 84,200 Yen for the 9.5 cam set and 14,000 Yen for air shipping, at that time the total was $1077.23 to my door. With the current exchange rate (assuming the price is still the same) $984.95.

Now the hidden cost is that you may need to relieve the head to fit the 9.5mm cams, the taller lobes can hit the head casting.

We have used a regrind before, works fine, and other than shimming the lifters you don't need to touch the head.

cali yaris · 04-10-2013, 02:55 PM

^ That's right the price did come down. I still say it's pricey compared to sending off a couple of cores for grinding, especially if the head doesn't need corresponding work.

Golddeenoh · 04-10-2013, 03:03 PM

What about just getting MI to make a Head with +1 mm valves, a set of custom ground cams, and a port and polish? then it should be as simple as making sure the cams are clocked right, the head is torqued down to spec and the timing marks line up, then go go go.

^ just saying, if we ask enough they eventually will have to supply to the demand.

JustDidIt · 04-10-2013, 03:17 PM

Quote:

Originally Posted by Golddeenoh

What about just getting MI to make a Head with +1 mm valves, a set of custom ground cams, and a port and polish? then it should be as simple as making sure the cams are clocked right, the head is torqued down to spec and the timing marks line up, then go go go.

^ just saying, if we ask enough they eventually will have to supply to the demand.

^ That!!

nanoss · 04-10-2013, 05:51 PM

Ok a friend was telling me that the scion xb 1st gen the exhaust camshaft have more duration the same valve lift but longer the time to close the valve. I am interested in jun cams but the thing that is keep me worried is the lift since the piston are a lill bit higher the valve could hit the pistons...

Viperoni · 04-11-2013, 08:47 AM

Thanks for posting again Nanoss!

Does anyone have specs on the cams?
I did a quick search and couldn't find a FSM.

nanoss · 04-11-2013, 01:28 PM

Yeah that will be usefull to know...

salmanghiyas · 11-04-2014, 02:32 PM

Quote:

Originally Posted by nanoss

Yeah that will be usefull to know...

Thread dead ?

japle · 11-06-2014, 11:23 PM

any updates?

JimKellyfan · 11-22-2014, 03:03 PM

Lotta work for very little HP. Me, I am shootin fer handling first, then play with braking. But, even the Blitz sounds better, and that too is a lotta dough for a little go

YarisPR · 12-31-2014, 09:30 AM

I've been running the Prius pistons for a while now, cero problems ��
Next step is getting a emanage and tune it with something other than 93 octane for Track Days only ��

Flipper_1938 · 01-11-2015, 09:08 AM

Quote:

Originally Posted by YarisPR

I've been running the Prius pistons for a while now, cero problems ��
Next step is getting a emanage and tune it with something other than 93 octane for Track Days only ��

In your opinion, how much hp did you gain with the piston swap?

YarisPR · 01-11-2015, 01:52 PM

Quote:

Originally Posted by Flipper_1938

In your opinion, how much hp did you gain with the piston swap?

Prius Pistons + port & polish head where 18whp, and its a fact not an opinion cause the car was dynoed before an after (Y)

RagnaCaT · 01-22-2015, 10:24 PM

YarisPR who did your port and polish?

monchito18 · 01-24-2015, 10:36 AM

Angelo still lives lol

RagnaCaT · 01-28-2015, 09:49 PM

Lets meet up in Puerto Rico... lets do that soon...

04-10-2013, 01:12 PM	#73
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ At $800 each (x2 !), they are pricey. Easier and cheaper to regrind camshafts here. We're doing a set for a customer now. __________________ 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.

04-10-2013, 02:55 PM	#76
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ That's right the price did come down. I still say it's pricey compared to sending off a couple of cores for grinding, especially if the head doesn't need corresponding work. __________________ 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.

04-10-2013, 03:03 PM	#77
Golddeenoh Takes corners too fast! View User's Garage Drives: Absolute Red 2009 Yaris HB Join Date: Apr 2012 Location: Columbia, SC Posts: 830	What about just getting MI to make a Head with +1 mm valves, a set of custom ground cams, and a port and polish? then it should be as simple as making sure the cams are clocked right, the head is torqued down to spec and the timing marks line up, then go go go. ^ just saying, if we ask enough they eventually will have to supply to the demand. __________________ mods:15''Drag DR21 w/Nitto NeoGen 205/50R15, Tanabe DF210 lowering springs 1.6/1.8, TRD Rear Sway Bar, Tanabe Front Sway Bar, Micro Image Short Throw Shift Kit (both in and under), 8.64lbs flywheel, F1 Stage 4 Clutch, AEM Cold Air Intake (Red), Megan Racing Header, DC Sports Axle Back Exhaust, Micro Image Crank Pulley, NST lite Alternator Pulley, ARP Manifold Stud Kit,Tanabe Front Strut Tower Brace, ScanGuage II, Micro Image Silicone Radiator Hose Kit (Red), NRG Carbon Fiber Shift Knob (round), 2009-2011 Toyota Yaris Liftback Foglight kit, NRG Grounding Kit (Red), Hella Horns(Red),CF Hood

04-11-2013, 08:47 AM	#80
Viperoni Drives: 2005 Toyota Echo Join Date: Aug 2010 Location: Brampton, ON Posts: 505	Thanks for posting again Nanoss! Does anyone have specs on the cams? I did a quick search and couldn't find a FSM. __________________ 2006 Saturn Ion Redline 2005 Toyota Echo RS 4dr hatch - Cyl #3 bad - sold 2000 Toyota Echo 2dr coupe - The track car - rusty & scrapped

11-22-2014, 03:03 PM	#84
JimKellyfan Drives: 2010 Yaris Sedan Join Date: Oct 2013 Location: the good Carolina Posts: 173	Lotta work for very little HP. Me, I am shootin fer handling first, then play with braking. But, even the Blitz sounds better, and that too is a lotta dough for a little go __________________ 2010 Yaris sedan, TRD CAT back (sport muffler only, really), OBX header (relocated front AF sensor to front pipe), OBX throttle plate spacer, K&N filter (in stock air box-for now), TRD struts and shocks, Mexico Rough Road Springs x 4, new Yota sway bar links front, slotted/drilled rotors and Maxx brakes front, Valvoline synthetic brake fluid, 3M undercoated, 16" Konig Feathers Michelin Pilot Sport AS 3 + Tires TRD rear sway bar, 4 GT Spec bars including: front strut brace 2 point, 4 point ladder brace, mid chassis brace and rear lower tie brace, rear hitch, [B]

04-10-2013, 05:51 PM	#79
nanoss Drives: Toyota yaris sedan Join Date: Apr 2013 Location: Puerto Rico Posts: 4	Ok a friend was telling me that the scion xb 1st gen the exhaust camshaft have more duration the same valve lift but longer the time to close the valve. I am interested in jun cams but the thing that is keep me worried is the lift since the piston are a lill bit higher the valve could hit the pistons...

04-11-2013, 01:28 PM	#81
nanoss Drives: Toyota yaris sedan Join Date: Apr 2013 Location: Puerto Rico Posts: 4	Yeah that will be usefull to know...

11-06-2014, 11:23 PM	#83
japle Drives: Vitz S 2007 LB Join Date: Feb 2013 Location: Kuala Lumpur, Malaysia Posts: 131	any updates?

12-31-2014, 09:30 AM	#85
YarisPR Drives: Yaris Sedan Join Date: Sep 2006 Location: MayaWest, Puerto Rico Posts: 1,574	I've been running the Prius pistons for a while now, cero problems �� Next step is getting a emanage and tune it with something other than 93 octane for Track Days only �� __________________ I Drive a 129whp Yaris ;)

01-22-2015, 10:24 PM	#88
RagnaCaT HacKers WanTed! View User's Garage Drives: Yaris S HB & Yaris S SD Join Date: Aug 2007 Location: Villalba, Puerto Rico Posts: 435	YarisPR who did your port and polish? __________________ *R-CaT* Project Yar 2ZR

01-24-2015, 10:36 AM	#89
monchito18 View User's Garage Drives: Yaris sedan Join Date: Jan 2009 Location: Puerto Rico, Isabela Posts: 427	Angelo still lives lol __________________

01-28-2015, 09:49 PM	#90
RagnaCaT HacKers WanTed! View User's Garage Drives: Yaris S HB & Yaris S SD Join Date: Aug 2007 Location: Villalba, Puerto Rico Posts: 435	Lets meet up in Puerto Rico... lets do that soon... __________________ *R-CaT* Project Yar 2ZR

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