Interesting picture of ICE engine head

glenk · 03-02-2006, 12:04 AM

Saw this on ebay and thought other folks might want to see an actual engine head from the 1.5L.

http://<br /> <a href="http://cgi.eb...Item</a><br />

I'm wondering if this is really a Prius compatible head. Is that the variable valve timing mechanism on the front of the cams?

galaxee · 03-02-2006, 12:23 AM

i'd cast some doubt on the compatibility.

the compression ratio is higher in the prius engine- while DH hasn't been through the Prius Tech class yet himself he recalls discussions with his team leader (the shop's best Prius tech) about the compression ratio being accounted for in the engine head.

and no, you can't see the VVT-i mechanism in that pic. the little nub on the left is what the VVT sprocket bolts on to. it contains the 3 oil ports to the sprocket from the cam that allow it to unlock and change.

hth

Frank Hudon · 03-02-2006, 12:30 AM

both cam's are different between the Echo and the Prius. Apart from the VVTi oil control hub.

03-02-2006, 12:23 AM	#2
galaxee running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 9,066 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 21	i'd cast some doubt on the compatibility. the compression ratio is higher in the prius engine- while DH hasn't been through the Prius Tech class yet himself he recalls discussions with his team leader (the shop's best Prius tech) about the compression ratio being accounted for in the engine head. and no, you can't see the VVT-i mechanism in that pic. the little nub on the left is what the VVT sprocket bolts on to. it contains the 3 oil ports to the sprocket from the cam that allow it to unlock and change. hth __________________ black 2005 prius, tweaked just the way i like it my diagnostic guy on electronics: "lack of troubleshooting ability is due to a high common sense rejection ratio."

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Picture with I.D.	okiebutnotfrommuskogee	Local Clubs, Events, and Road Trips	2	04-20-2007 11:43 PM
Picture of the Day	ALoLA	Prius Main Forum	13	02-14-2007 11:21 AM
Hybrid Head-to-Head Day	gtn12130	Prius Main Forum	19	05-03-2006 06:35 PM
Hybrids Head to Head on Wired website	kidtwist	Prius Main Forum	2	03-23-2005 11:52 AM
Head to Head: Ford Escape Hybrid vs Toyota Prius	Tempus	Prius and Hybrid News	5	11-24-2004 08:14 PM

03-02-2006, 12:04 AM	#1
glenk Senior Member Join Date: Dec 2005 Location: Cupertino, CA Posts: 101 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Saw this on ebay and thought other folks might want to see an actual engine head from the 1.5L. http://<br /> <a href="http://cgi.eb...Item</a><br /> I'm wondering if this is really a Prius compatible head. Is that the variable valve timing mechanism on the front of the cams?

03-02-2006, 12:30 AM	#3
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	both cam's are different between the Echo and the Prius. Apart from the VVTi oil control hub.