Car: 1995 Volvo 850 NA automatic EGR
Also, the head was replaced only 15,000 miles ago with new valve guide seals after being milled down and hot tanked. The pieces are brittle and I can break them with my fingers.
0
What Do These Pieces Belong To? Came Out Of My Cylinder Head :/
Started by DoriDori, Jan 21 2012 05:11 PM
850 na rebuild
7 replies to this topic
#1
DoriDori
-
- Members
-
- 79 posts
Level 1 Member
- Gender:Male
- Interests:Japanese muscle cars, drifting, engine theory, my handy down Volvo 850, fabrication, theology, soteriology, eschatology, local churches, non-profits, healthy eating, fitness, gardening, college graduate
- Location:North Georgia
- Crew:___
Posted 21 January 2012 - 05:14 PM
We're rebuilding the cylinder head after a bad coil caused unburnt fuel build up and thus a burnt ex valve . After removing the bottom half of the sandwich head, these pieces came out. What are they? Any insight is much appreciated!
Car: 1995 Volvo 850 NA automatic EGR
Also, the head was replaced only 15,000 miles ago with new valve guide seals after being milled down and hot tanked. The pieces are brittle and I can break them with my fingers.
Car: 1995 Volvo 850 NA automatic EGR
Also, the head was replaced only 15,000 miles ago with new valve guide seals after being milled down and hot tanked. The pieces are brittle and I can break them with my fingers.
#2
phunktified
-
- Supporting Member
-
- 349 posts
Level 1 Member
- Gender:Male
- Location:Northeast CT
- Crew:NEC
Posted 21 January 2012 - 07:24 PM
looks like a piece of old exhaust manifold gasket to me ..
Former: 89 744 GLE 16V, 90 745 GLE 16V, 95 964, 94 854 Turbo, 01 S40 1.9T, 99 C70 HPT, 01 S60 T5, 07 VW GTI
Current: 98 V70 GLT, 97 854 GLT
Current: 98 V70 GLT, 97 854 GLT
#3
TRACStar
-
- Lifetime Supporter
-
- 2,417 posts
Level 3 Member
- Gender:Male
- Interests:All types of ill shit
- Location:Philadelphia, PA
- Crew:NEC
Posted 21 January 2012 - 07:28 PM
phunktified, on 21 January 2012 - 07:24 PM, said:
looks like a piece of old exhaust manifold gasket to me ..
+1
96 854R IPD ECU - Turbo XS dual stage MBC - Samco - Koni - 16T angled -OBX - R mani - IPD CAI?
13.7x @ 103 mph with automagic
94 855 Turbo.... In a state of cryostasis
#4
DVolvoguy850T5
-
- Supporting Member
-
- 338 posts
Level 1 Member
- Gender:Male
- Location:Bartlett, IL
- Crew:___
Posted 21 January 2012 - 09:39 PM
Are they metal? That image is tale tale valve seat to me.....(if these pcs are metal).
I have a 97 855T5 now, have had 6 other Volvos in the past. Sux I aint got um any more!
#5
Keaton85
-
- Members
-
- 6,439 posts
My zip tie is bigger than yours.
- Gender:Male
- Crew:___
Posted 21 January 2012 - 10:09 PM
a valve seat? 
#6
DVolvoguy850T5
-
- Supporting Member
-
- 338 posts
Level 1 Member
- Gender:Male
- Location:Bartlett, IL
- Crew:___
Posted 22 January 2012 - 04:45 AM
Please note the attached.
I have never seen the inside of a Volvo's head nor the valve installation. However when repairing and overhauling motor cycle engines the facing of the valve seat as shown in the picture can become delaminated as shown in the OP's pictures and be just as fragile. Most often than not in an aluminum head the valve seats are made of steel and pressed into the valve surround area.
I have never seen the inside of a Volvo's head nor the valve installation. However when repairing and overhauling motor cycle engines the facing of the valve seat as shown in the picture can become delaminated as shown in the OP's pictures and be just as fragile. Most often than not in an aluminum head the valve seats are made of steel and pressed into the valve surround area.
Edited by DVolvoguy850T5, 22 January 2012 - 04:49 AM.
I have a 97 855T5 now, have had 6 other Volvos in the past. Sux I aint got um any more!
#7
TRACStar
-
- Lifetime Supporter
-
- 2,417 posts
Level 3 Member
- Gender:Male
- Interests:All types of ill shit
- Location:Philadelphia, PA
- Crew:NEC
Posted 22 January 2012 - 05:08 AM
It could be the angle of the picture but the pieces seem flat, and with the carbon line on it I'm still leaving towards exhaust gasket.
96 854R IPD ECU - Turbo XS dual stage MBC - Samco - Koni - 16T angled -OBX - R mani - IPD CAI?
13.7x @ 103 mph with automagic
94 855 Turbo.... In a state of cryostasis
#8
DoriDori
-
- Members
-
- 79 posts
Level 1 Member
- Gender:Male
- Interests:Japanese muscle cars, drifting, engine theory, my handy down Volvo 850, fabrication, theology, soteriology, eschatology, local churches, non-profits, healthy eating, fitness, gardening, college graduate
- Location:North Georgia
- Crew:___
Posted 22 January 2012 - 07:05 PM
No it's not any kind of gasket. My father mentioned sometimes when milling down heads, machinist install these kind of spacers under the head bolts. This would be done to ensure the bolts do not bottom out in the block.
Yes, it is magnetic. We were sweeping inside the head with a magnetic wand looking for any bits of metal and found these. They are the exact diameter to fit around a head bolt. Just asking around cause I've never head of such spacers but we'll call our machinist and ask if he remembers installing them. Thanks, everyone for the feedback!
Yes, it is magnetic. We were sweeping inside the head with a magnetic wand looking for any bits of metal and found these. They are the exact diameter to fit around a head bolt. Just asking around cause I've never head of such spacers but we'll call our machinist and ask if he remembers installing them. Thanks, everyone for the feedback!
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
