possible cylinder head warpage? - Honda-Tech

Go Back   >
Log In 


possible cylinder head warpage?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-06-2007, 09:57 AM   #1
Junior Member
Thread Starter
 
MotorSpecies ver1.6's Avatar
 
Join Date: Nov 2006
Location: MoonSHINE Metropolis, .FL. Run Free, North America
Posts: 129
Default possible cylinder head warpage?

my first motor build and i may have possibly warped the head............
i removed the cylinder head on a b16a starting with the head bolts in the center and worked my way outward in a criss-cross pattern and i did it in a two step parttern. i found out later that night that i had to loosen the head in the reverse pattern(outward-in). im worried that i may have warped the head? please help.....thank you.

I measured for warpage. I used a feeler gauge and a 1ft.plastic architecture tri ruler(has three measurements, ruler resembles a churro with three fins).

at various points and angles on the head surface, i couldnt get the feeler gauge(set at .002in) to pass beneath the ruler while using a light pressure on the ruler . The service limit for warpage is .05mm or .002in. Am i alright or should get a machine shop to inspect it. Thanks

P.s. what about a dail indicator? thanks
MotorSpecies ver1.6 is offline   Reply With Quote
Old 02-06-2007, 10:04 AM   #2
Junior Member
Thread Starter
 
MotorSpecies ver1.6's Avatar
 
Join Date: Nov 2006
Location: MoonSHINE Metropolis, .FL. Run Free, North America
Posts: 129
Default Re: possible cylinder head warpage? (MotorSpecies ver1.6)

..........
MotorSpecies ver1.6 is offline   Reply With Quote
Old 02-06-2007, 10:11 AM   #3
Honda-Tech Member
 
alterdcreations's Avatar
 
Join Date: Feb 2006
Location: Single camshafting for now in, N.Y.
Posts: 3,789
Default Re: possible cylinder head warpage? (MotorSpecies ver1.6)

just send it to the machine shop and have them lap it flat.
standard procedure
alterdcreations is offline   Reply With Quote
Old 02-06-2007, 10:33 AM   #4
Honda-Tech Member
 
hybrid1990crx's Avatar
 
Join Date: Feb 2004
Posts: 2,012
Default Re: possible cylinder head warpage? (MotorSpecies ver1.6)

i honestly think you'll be fine. whenever I do headgaskets and such I just make sure to follow the procedure to torque it down.
hybrid1990crx is offline   Reply With Quote
Old 02-06-2007, 02:27 PM   #5
Honda-Tech Member
 
mike_belben@yahoo.com's Avatar
 
Join Date: Feb 2004
Location: not riding any bandwagons in, massachusetts, usa
Posts: 1,592
Default

put the cams and rocker shafts in. if they go in without fuss and spin by hand, youll be fine.
mike_belben@yahoo.com is offline   Reply With Quote
Old 02-06-2007, 07:06 PM   #6
Junior Member
Thread Starter
 
MotorSpecies ver1.6's Avatar
 
Join Date: Nov 2006
Location: MoonSHINE Metropolis, .FL. Run Free, North America
Posts: 129
Default Re: (mike_belben@yahoo.com)

truu truuuu,thanks fellas


PS. lap????never heard of that procedure before??(coool).

what do they do exactly when they lap the head?
MotorSpecies ver1.6 is offline   Reply With Quote
Old 02-07-2007, 08:03 PM   #7
Honda-Tech Member
 
hybrid1990crx's Avatar
 
Join Date: Feb 2004
Posts: 2,012
Default Re: (MotorSpecies ver1.6)

same thing as milling.
hybrid1990crx is offline   Reply With Quote
Old 02-08-2007, 11:29 PM   #8
Junior Member
Thread Starter
 
MotorSpecies ver1.6's Avatar
 
Join Date: Nov 2006
Location: MoonSHINE Metropolis, .FL. Run Free, North America
Posts: 129
Default Re: (hybrid1990crx)

milling?!?!?im Definately not looking for a milling also am not looking to remove any material from the head(surface).If anything, as little material as possible.

Im having a hard time finding resonably priced straight edges too(dammit!!!).
MotorSpecies ver1.6 is offline   Reply With Quote
Old 02-08-2007, 11:44 PM   #9
Junior Member
Thread Starter
 
MotorSpecies ver1.6's Avatar
 
Join Date: Nov 2006
Location: MoonSHINE Metropolis, .FL. Run Free, North America
Posts: 129
Default Re: (MotorSpecies ver1.6)

Quote:
Originally Posted by hybrid1990crx
i honestly think you'll be fine. whenever I do headgaskets and such I just make sure to follow the procedure to torque it down.
hybrid1990crx....do you get any leaks or sealing problems(leakdown test/compression tes).how do the/your motors run as far as abuse/longevity and fluid consumption(burning/smoking)?

Thanks
MotorSpecies ver1.6 is offline   Reply With Quote
Old 02-09-2007, 04:52 AM   #10
Honda-Tech Member
 
mike_belben@yahoo.com's Avatar
 
Join Date: Feb 2004
Location: not riding any bandwagons in, massachusetts, usa
Posts: 1,592
Default

if the deck was warped to the point that you noticed it with a straightedge, then your cam and rocker shaft bores would be too warped to get them in there, and your cams would bind once the caps were torqued.

a fresh mill isnt ever a bad idea, given that you can find a shop who will do it without
a) leaving the surface all ridgy like a record player
b) cutting it crooked.. where lengthwise is much much more important than front to back (int to exh)

"lapping" isnt a very good term for cylinder head surfaces. aluminum heads are cut with carbide/pcb/cbn inserts on vertical milling machines. some archaic shops might still be trying to belt sand but thats ancient history, iron heads are sometimes done on grinding machines, sort of like a flywheel grinder but with a lengthwise traveling table instead of a rotary table. i suppose some shops might use a segmented wheel on aluminum heads too, but it probably isnt that common.
"lapping" is when you run two mating surfaces around each other (the surfaces "run laps" around each other) with an abrasive, toothpaste-like compound to wear each other down. valves are lapped. heads are milled or ground.

try enco for your machinist's straight edge.
mike_belben@yahoo.com is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
D16y8 Sealing up the intake manifold. Sucking Air HELP!!! Jakester9500 Honda Civic / Del Sol (1992 - 2000) 11 09-24-2014 05:57 PM
DIY Engine block Blueprinting techniques 98vtec Engine Machining & Assembly 65 05-30-2014 06:55 AM
Integra DC2 Clutch Assembly: removal, installation, inspection and more Master23 Acura Integra 0 06-23-2009 03:31 PM
what to use to check head for warpage? B16Civic93 Tech / Misc 13 04-28-2009 06:13 PM
Head warpage how much is too much illcrx Honda CRX / EF Civic (1988 - 1991) 5 06-02-2005 11:50 AM


Tags
1990, b16, cylinder, head, honda, inspecting, likelihood, limit, measured, measurements, ruler, service, tolerance, warp, warpage

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 10:00 AM.



Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.