"mushroomed valves" - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 08-05-2009, 10:37 PM   #1
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default "mushroomed valves"

So i was bullshiting with the Parts Manager at my local mazda dealer today, talking about our miatas and my engine "build".

I told him that I needed a head rebuild because some valves werent sealing and he said that was extremely common. He said He has seen a lot of miatas that were driven hard (not all boosted) that got bad valves. He told me SS valves are a must if you are reving high.

I've never really heard of anyone having major head issues here. I figured mine was just due to high millage cause I had low compression BEFORE I boosted.

Any thoughts?
240_to_miata is offline   Reply With Quote
Old 08-05-2009, 10:50 PM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,892
Total Cats: 1,792
Default

uh huh.
Braineack is offline   Reply With Quote
Old 08-05-2009, 11:04 PM   #3
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

I've seen many bone-stock miata engines with leaky exhaust valves. They seem to burn easily.
JasonC SBB is offline   Reply With Quote
Old 08-10-2009, 11:46 PM   #4
Junior Member
 
Join Date: Jul 2008
Posts: 114
Total Cats: 0
Default

i wonder why stock valves do this so easily?


fyi, the term "mushroomed valves" usually refers to the top of the valve stem "mushrooming" out from extended use.
NickC is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need Advice: Chewed up Axles on Torsen Swap hornetball Suspension, Brakes, Drivetrain 22 07-22-2013 04:37 PM
Mexican Words of the day(slightly offensive) icantthink4155 Insert BS here 1 11-22-2009 07:42 PM
Scored me some awesome fungus Stein Insert BS here 23 05-05-2009 12:19 AM
ATLANTA AREA PEOPLE....click this topic. Doppelgänger Local Meets, Events and Tech Days 13 03-08-2008 05:45 PM


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:14 AM.