home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > maintenance & nonperformance

Reply
 
Thread Tools Display Modes
Old 04-19-2019, 03:05 PM   #1
tomasss
Board Member
 
tomasss's Avatar
 
Join Date: Oct 2008
Location: Leuven, Belgium
Default Flywheel hairline cracks

I have unmounted the pressure plate and clutch from my 740T and found out there are harline cracks in the flywheel surface...now I am wondering if I should worry about it or if it is normal.

What do you guys think? (click the pic for full res)







__________________
Volvo 740 Turbo B204GT 1991 >project thread<
It's the oversteer that scares passengers. It's the understeer that scares the driver.
Quote:
Originally Posted by Wren View Post
I would rather push a 240 than drive a V70.
lazy PRV engine? Check >this< out
tomasss is offline   Reply With Quote
Old 04-19-2019, 03:09 PM   #2
Jack
junkman
 
Jack's Avatar
 
Join Date: Jul 2011
Location: The Ass Cheek Of History
Default

That flywheel needs to be resurfaced unless you like to change your clutch often

/thread
__________________
85 245 | 82 242| 75 245| 69 145 |66 122



Quote:
Originally Posted by BritishBrick
Don’t bother, I would literally rather throw them away than give you the pleasure. I will never sell to you.
Jack is offline   Reply With Quote
Old 04-19-2019, 03:16 PM   #3
stick70
All the gauges
 
stick70's Avatar
 
Join Date: Sep 2006
Location: North Carolina
Default

As jack said, it's totally normal, but you should get it resurfaced. Any machine shop that does car stuff will handle it, shouldn't cost much over $100.

I can't speak to what will happen if you don't get it done, but it's easy enough to handle.
__________________
Kyle and the "Projects" -- '84 242 TI -- '66 220 S -- '89 Supra Turbo -- '84 Rabbit GTI
stick70 is offline   Reply With Quote
Old 04-20-2019, 12:11 PM   #4
283SD
Board Member
 
Join Date: Mar 2008
Default

Resurface it. It looks like a lot of clutch slippage to get it so hot to burn the surface.
283SD is offline   Reply With Quote
Old 04-20-2019, 12:33 PM   #5
elmford1
Board Member
 
elmford1's Avatar
 
Join Date: Mar 2013
Location: Rochester ny
Default

Just finished mine. It was way worse stock clutch couldn't take it in 3 and 4
elmford1 is offline   Reply With Quote
Old 04-20-2019, 01:10 PM   #6
NotSoFresh
Sick ****** T-Brick Prick
 
NotSoFresh's Avatar
 
Join Date: Aug 2008
Location: gangcouver
Default

It looks like that car was driven by a clutch slipper, or had a poorly adjusted one. Before you took it out, did the clutch squeel or chirp on engagement?
NotSoFresh is offline   Reply With Quote
Old 04-20-2019, 01:21 PM   #7
tomasss
Board Member
 
tomasss's Avatar
 
Join Date: Oct 2008
Location: Leuven, Belgium
Default

I drove the car like 20 meters...from the tow truck to my garage but those two or three clutch engagements were ok, without any weird sounds.
Ok, going for resurfacing.
tomasss is offline   Reply With Quote
Old 04-21-2019, 10:56 PM   #8
11BC2
Board Member
 
Join Date: Dec 2014
Location: Cool, CA.
Default

Depending on how severe The blueing is, that flywheel might be scrap, as the metal has been compromised. Resurfacing will only clean up the surface, not core(if you will) of the flywheel.
11BC2 is offline   Reply With Quote
Old 04-22-2019, 01:01 AM   #9
sbabbs
Board Member
 
sbabbs's Avatar
 
Join Date: Dec 2006
Location: Rushing Lane, Scappoose, OR
Default

If your just putting a stock stuff back in and not racing it should be fine if it cleans up with resurfacing. Problems happen when you try and use ceramic discs and go racing. Make sure you get the top of the dog dish ground down so the gap is within spec between the pressure plate mounting surface and the surface of where the disc rides.
__________________
1988 245 White slicktop M47 Wagon! 2.5L NA 8v going in.
1990 745 B230FT Getrag JohnV flywheel 240mm clutch 13c A-cam 3.54 G80 548K MILES
1991 740SE B230FT NPR Strut braces IPD bar A cam 550cc EV14's. 3.73 G80 M90 to put in.
sbabbs is offline   Reply With Quote
Old 04-22-2019, 11:33 AM   #10
Harry Tuttle
Board Member
 
Join Date: Jun 2006
Location: in your ducts
Default

Agreed that with resurfacing that FW should work fine for daily street use.


Quote:
Originally Posted by sbabbs View Post
Make sure you get the top of the dog dish ground down so the gap is within spec between the pressure plate mounting surface and the surface of where the disc rides.
Where is that spec to be found?
__________________
I came into this game for the action, the excitement. Go anywhere, travel light, get in, get out, wherever there's trouble, a man alone


Quote:
Originally Posted by dl242gt
It's always better to get into a turbo volvo and drive.
Harry Tuttle is offline   Reply With Quote
Old 04-22-2019, 12:29 PM   #11
VB242
A tough rowing ho
 
VB242's Avatar
 
Join Date: Sep 2011
Location: Virginia Beach
Default

Quote:
Originally Posted by Harry Tuttle View Post
Agreed that with resurfacing that FW should work fine for daily street use.




Where is that spec to be found?
I would assume you would have to cut it the same amount as the mating surface.
__________________
1980 Richelieu red JDM flares franken-242DL now with 8.8, 1989 silver 780 sienna rear spring nivomat delete.
VB242 is offline   Reply With Quote
Old 04-22-2019, 01:18 PM   #12
sbabbs
Board Member
 
sbabbs's Avatar
 
Join Date: Dec 2006
Location: Rushing Lane, Scappoose, OR
Default

We'll my machinist in Creswel Oregon, Drummond automotive machine, he had a book or he just knew it. I never asked, but he did do both surfaces. Also only charged me 25 buxs. Bro deal. Others like big time shop in Portland say Bearing services would probably charge at least 100 maybe more. Bearing services charged me 550 buxs to lighten my dog dish flywheel that exploded at the track with a ceramic disc after it got way to hot doing 10 runs in a row 100 degree day. Nowdays I only run billet steel flywheels, cheaper then other BS..
sbabbs is offline   Reply With Quote
Old 04-22-2019, 02:00 PM   #13
Harry Tuttle
Board Member
 
Join Date: Jun 2006
Location: in your ducts
Default

Hmmmm... somebody must know that. What if it has been previously ground incorrectly? If I know the proper depth of the step I can check for that beforehand, and check my machinist's work afterward. It is hard for me to believe that any random machinist would know it.

Will search greenbooks...
Harry Tuttle is offline   Reply With Quote
Old 04-22-2019, 04:27 PM   #14
culberro
Ronald Culberbone III
 
culberro's Avatar
 
Join Date: Feb 2010
Location: Portland, OR
Default

Pretty sure the step height is spec'd at 25.0mm.
__________________
Cult Person. Pissing in your Kool-Aid.
culberro is offline   Reply With Quote
Old 04-22-2019, 09:29 PM   #15
Harry Tuttle
Board Member
 
Join Date: Jun 2006
Location: in your ducts
Default

Harry Tuttle is offline   Reply With Quote
Old 04-24-2019, 05:33 AM   #16
tomasss
Board Member
 
tomasss's Avatar
 
Join Date: Oct 2008
Location: Leuven, Belgium
Default

Some more pics just to justify myself why do I need to spend more money on it







It is indeed little bit blueish on the daylight, so I am preferably replacing it with a different one rather than resurfacing the current one.
tomasss is offline   Reply With Quote
Old 04-24-2019, 11:47 AM   #17
Jack
junkman
 
Jack's Avatar
 
Join Date: Jul 2011
Location: The Ass Cheek Of History
Default

oook
Jack is offline   Reply With Quote
Old 05-10-2019, 09:01 AM   #18
tomasss
Board Member
 
tomasss's Avatar
 
Join Date: Oct 2008
Location: Leuven, Belgium
Default

Guys...it's damn tough to find a good flywheel! Most of them is cracked even worse than mine...
The only one I have found not worse it >this< one but still I see that it has some heat spots and the surface is rough...any opinions about this one?
tomasss is offline   Reply With Quote
Old 05-10-2019, 09:35 AM   #19
iHateVolvoPeople
Board Member
 
Join Date: Feb 2014
Location: Midwest
Default

Have you posted in the wanted section?
__________________
Feedback Thread
Current:
93' 244T M47
93' 245 M47
90' 744 AW70
94' M-Edition Miata 5 speed, 93k
95' Camry A140E, 246k
91' 745 Regina AW701, maybe future turbo project
Past (Volvos):
80' 242gt M46
88' 245T M47
92' 945T AW71
94' 945T AW71
90' 745T AW71 (Donor car for the 91)




People think Volvos are good cars until they drive cars that are actually good.
iHateVolvoPeople is offline   Reply With Quote
Old 05-10-2019, 10:17 AM   #20
Redwood Chair
K-jet For Life
 
Redwood Chair's Avatar
 
Join Date: Mar 2007
Location: - Stock PSI Or Bust -
Default

It'll buff out.
__________________
Raise The Lowered


Image hosted by servimg.com

Quote:
Originally Posted by hiperfauto View Post
Folks on here don't know a good deal when they see it.
how psi stock cna support?

Redwood Chair is offline   Reply With Quote
Old 05-10-2019, 10:57 AM   #21
Jack
junkman
 
Jack's Avatar
 
Join Date: Jul 2011
Location: The Ass Cheek Of History
Default

Quote:
Originally Posted by Redwood Chair View Post
It'll buff out.
This
Just get it resurfaced already
Jack is offline   Reply With Quote
Old 05-10-2019, 12:18 PM   #22
tomasss
Board Member
 
tomasss's Avatar
 
Join Date: Oct 2008
Location: Leuven, Belgium
Default

Quote:
Originally Posted by Jack View Post
Just get it resurfaced already
Yeah...that is bigger problem in this damn country than it seems. Barely anyone knows how to weld here, machining generally is a big no-no.
I will check if there is anything close by in Germany.
tomasss is offline   Reply With Quote
Old 05-10-2019, 12:57 PM   #23
iHateVolvoPeople
Board Member
 
Join Date: Feb 2014
Location: Midwest
Default

Might end up cheaper to just have a known good one shipped to ya. Not sure how expensive shipping is but people pretty much give these away I think.
iHateVolvoPeople is offline   Reply With Quote
Old 05-10-2019, 03:33 PM   #24
Redwood Chair
K-jet For Life
 
Redwood Chair's Avatar
 
Join Date: Mar 2007
Location: - Stock PSI Or Bust -
Default

Quote:
Originally Posted by iHateVolvoPeople View Post
Might end up cheaper to just have a known good one shipped to ya. Not sure how expensive shipping is but people pretty much give these away I think.


Says the guy who's too lazy to go to the post office.
Redwood Chair is offline   Reply With Quote
Old 05-10-2019, 05:23 PM   #25
classicswede
Volvo upgrades
 
Join Date: Sep 2005
Location: North Wales
Default

I would either just send it as is or spend on a TTV flywheel
__________________
http://www.classicswede.co.uk/

classicswede is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 06:13 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.