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 running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 8,932 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 20	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, 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." Last edited by galaxee; 10-05-2008 at 09:10 PM.

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03-22-2007, 01:15 AM	#2
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	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 running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 8,932 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 20	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: 1,736 My Car: 2001 Prius Package: Pioneer #1 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 5	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: 2,883 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Bob -- http://techno-fandom.org/~hobbit/pix...00/muptilt.jpg . _H*

03-27-2007, 04:31 PM	#7
glenk Join Date: Dec 2005 Location: Cupertino, CA Posts: 100 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 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: 129 My Car: 2006 Prius Package: #4 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Thanks so much for the pictures. Clutch???? Please let us know just how it works.