1G Prius engine reseal

galaxee · 03-22-2007, 12:43 AM

phone camera pics, kinda low quality, but you get the idea.

oil leak where the head meets the block, along the edge of the timing chain cover.

exhaust port on head. on the port on the right, you can see the valve stem through the port.

rear main oil seal and end of crankshaft

transmission minus engine

lower oilpan removed, oil pickup tube exposed. on lower right is where the oil filter screws on, with the threaded centerpost missing

carbon and oil buildup on intake port

flywheel: note in the next 3 pics the very small area clutch plate actually contacts.

clutch plate

pressure plate

engine minus valve cover

engine, upside down, timing cover removed, timing chain exposed

ends of camshafts. on the left is the vvt sprocket.

camshaft lobe sticking up

Frank Hudon · 03-22-2007, 01:15 AM

lots of varnish build up on the interior and from the angle it looks like a lot of play in the timing chain. How many miles on this car and any history on the oil change interval and the brand of oil used? Thnx the DH for providing them.

galaxee · 03-25-2007, 10:01 PM

109k on it, and DH also noticed the varnish. no clue as to the oil change history, he hasn't looked it up in the customer service history.

tochatihu · 03-26-2007, 10:53 AM

Would like to see if there is less varnish in a big-odometer Prius that has been on a diet of synthetic motor old. Perhaps the simplest place to look would be in the sump, at the expense of a new gasket.

bwilson4web · 03-26-2007, 11:57 PM

<div class='quotetop'>QUOTE(galaxee @ Mar 22 2007, 12:43 AM) [snapback]410011[/snapback]</div>

Quote:

phone camera pics, kinda low quality, but you get the idea.
. . .
[/b]

Great photos but can you tell if the crank throws impact the oil in the pan if it is overfilled?

One of the hypothesis about overfilled oil is the crank throws impacting the oil in the pan.

Bob Wilson

hobbit · 03-27-2007, 01:00 AM

Bob -- http://techno-fandom.org/~hobbit/pix...00/muptilt.jpg
.
_H*

glenk · 03-27-2007, 04:31 PM

Does the title of the thread sugggests that this engine was in for repair of an oil leak(s)?

Anyways, thanks for the pictures. My guess is this Prius was just "driven". I've seen less varnish on engines with twice the mileage.

It appears that the water passage looks clean though.

Interesting to find out about the clutch mechanism. Maybe to reduce the shudder during engine shutdown/startups?

duanelaugh · 04-01-2007, 08:06 AM

<div class='quotetop'>QUOTE(glenk @ Mar 27 2007, 05:31 PM) [snapback]413164[/snapback]</div>

Quote:

Does the title of the thread sugggests that this engine was in for repair of an oil leak(s)?

Anyways, thanks for the pictures. My guess is this Prius was just "driven". I've seen less varnish on engines with twice the mileage.

It appears that the water passage looks clean though.

Interesting to find out about the clutch mechanism. Maybe to reduce the shudder during engine shutdown/startups?
[/b]

That's odd, I have always read that the Prius has no clutch....what gives?

Frank Hudon · 04-01-2007, 10:57 AM

<div class='quotetop'>QUOTE(Duane @ Apr 1 2007, 05:06 AM) [snapback]415912[/snapback]</div>

Quote:

That's odd, I have always read that the Prius has no clutch....what gives?
[/b]

all Prius have the "drive plate" as show to reduce the pulses from the ICE to the drive train. And yes there have been reports of them slipping.

nwprius · 04-01-2007, 11:05 AM

Thanks so much for the pictures.

Clutch???? Please let us know just how it works.

03-22-2007, 12:43 AM	#1
galaxee resident lab rat Join Date: Mar 2005 Location: boilermaker territory Posts: 9,675 My Car: 2005 Prius Model: N/A Package: #5 Thanks: 0 Thanked 93 Times in 37 Posts Friends: 26	phone camera pics, kinda low quality, but you get the idea. oil leak where the head meets the block, along the edge of the timing chain cover. exhaust port on head. on the port on the right, you can see the valve stem through the port. rear main oil seal and end of crankshaft transmission minus engine lower oilpan removed, oil pickup tube exposed. on lower right is where the oil filter screws on, with the threaded centerpost missing carbon and oil buildup on intake port flywheel: note in the next 3 pics the very small area clutch plate actually contacts. clutch plate pressure plate engine minus valve cover engine, upside down, timing cover removed, timing chain exposed ends of camshafts. on the left is the vvt sprocket. camshaft lobe sticking up __________________ black 2005 prius, a few mods that make me happy g: class of '09 in intense science DH: class of '09 in medical equipment hoping to discover the 'reward' part of the sacrifice-reward cycle soon! Last edited by galaxee; 10-05-2008 at 09:10 PM.

LinkBacks (?) LinkBack to this Thread: http://priuschat.com/forums/gen-ii-prius-technical-discussion/29957-1g-prius-engine-reseal.html
Posted By	For	Type	Date
Prius links	This thread	Refback	06-14-2008 07:01 PM
Engine pix	This thread	Refback	03-28-2008 10:02 PM
Prius links	This thread	Refback	02-10-2008 03:13 PM

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Prius Engine Variants	PoulStaugaard	Gen II Prius Technical Discussion	11	11-06-2007 06:50 PM
engine noise 01 Prius	jbondman871	Gen II Prius Care, Maintenance and Troubleshooting	0	09-28-2007 08:23 AM
X 22 Prius - use your engine!	donee	Gen II Prius Main Forum	0	06-25-2007 06:15 PM
Prius engine oil analyses	tochatihu	Gen II Prius Main Forum	3	11-30-2005 11:59 PM
Prius Engine HP upgrades	JBJAG	Gen II Prius Main Forum	19	11-14-2005 12:22 AM

03-22-2007, 01:15 AM	#2
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	lots of varnish build up on the interior and from the angle it looks like a lot of play in the timing chain. How many miles on this car and any history on the oil change interval and the brand of oil used? Thnx the DH for providing them.

03-25-2007, 10:01 PM	#3
galaxee resident lab rat Join Date: Mar 2005 Location: boilermaker territory Posts: 9,675 My Car: 2005 Prius Model: N/A Package: #5 Thanks: 0 Thanked 93 Times in 37 Posts Friends: 26	109k on it, and DH also noticed the varnish. no clue as to the oil change history, he hasn't looked it up in the customer service history.

03-26-2007, 10:53 AM	#4
tochatihu Senior Member Join Date: Apr 2004 Location: Kunming Yunnan China Posts: 2,404 My Car: 2001 Prius Model: Package: Pioneer #1 Thanks: 1 Thanked 38 Times in 38 Posts Friends: 14	Would like to see if there is less varnish in a big-odometer Prius that has been on a diet of synthetic motor old. Perhaps the simplest place to look would be in the sump, at the expense of a new gasket.

03-27-2007, 01:00 AM	#6
hobbit Senior Member Join Date: Mar 2005 Location: Bahstahn Posts: 3,618 My Car: Model: Package: Thanks: 0 Thanked 216 Times in 118 Posts Friends: 0	Bob -- http://techno-fandom.org/~hobbit/pix...00/muptilt.jpg . _H*

03-27-2007, 04:31 PM	#7
glenk Senior Member Join Date: Dec 2005 Location: Cupertino, CA Posts: 103 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Does the title of the thread sugggests that this engine was in for repair of an oil leak(s)? Anyways, thanks for the pictures. My guess is this Prius was just "driven". I've seen less varnish on engines with twice the mileage. It appears that the water passage looks clean though. Interesting to find out about the clutch mechanism. Maybe to reduce the shudder during engine shutdown/startups?

04-01-2007, 11:05 AM	#10
nwprius Senior Member Join Date: Feb 2004 Location: Roy, Washington and Nanaimo, Canada Posts: 147 My Car: 2006 Prius Model: Package: #4 Thanks: 1 Thanked 0 Times in 0 Posts Friends: 1	Thanks so much for the pictures. Clutch???? Please let us know just how it works.