Cracked valve spring retainer.....
04-04-2007, 08:29 PM
#21
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Originally Posted by thorax,Apr 4 2007, 06:53 PM
so basically only 16?
04-04-2007, 08:38 PM
#22
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Originally Posted by Sarek,Apr 4 2007, 08:29 PM
yes, 16 retainers and 32 cotters/keepers. I have a set available NIB I just bought from the dealership, I've decided to just get my head done at Portflow. if anyone is interested LMK
04-04-2007, 08:42 PM
#23
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Originally Posted by cuonice,Nov 30 2006, 04:05 PM
Went to do a valve adjustment and discovered a cracked retainer.
Now I'm wondering whether I should replace my retainers with new OEMs or should I go with a set of Ti retainers?
Any experiences?
Thanks guys,
Aaron
Now I'm wondering whether I should replace my retainers with new OEMs or should I go with a set of Ti retainers?
Any experiences?
Thanks guys,
Aaron
Why do you think your retainers cracked?
Would retainers crack for no reason (no reason being never over-revving)?
i had my retainers replaced...but i don't remember if i got ap1 or ap2...i ordered from hardtopguy...should have made sure to get ap2's...oh well.
do you think hardtopguy would be able to pull up an invoice from 2004, assuming its all computerized and check for me? hehe, i guess i'll call him and ask...
04-04-2007, 08:48 PM
#24
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Originally Posted by jyeung528,Apr 4 2007, 08:38 PM
What are you doing to your head?
PORTFLOW Black Nitrite Valves & PORTFLOW Titanium Retainer & Dual Spring Kit
disassemble/ clean/ inspection
port & polish
full radius competition exhaust valve job
multi-angle competition intake valve job
de-shroud valves & polish chambers
surface deck
assembly / new seals included
04-04-2007, 08:50 PM
#25
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I'm sure he will. Hardtopguy is awesome, I spent a long time on the phone with him today and we got on the subject of retainers.
Just to throw some fuel on the fire, he says he thinks the AP2 retainers will crack just like the AP1's do, and that he had a metal expert inspect AP1 and AP2 retainers to see if he should start recommending the AP2 as better and they found they were both pretty wimpy retainers.
Just to throw some fuel on the fire, he says he thinks the AP2 retainers will crack just like the AP1's do, and that he had a metal expert inspect AP1 and AP2 retainers to see if he should start recommending the AP2 as better and they found they were both pretty wimpy retainers.
04-05-2007, 05:03 PM
#27
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Originally Posted by thorax,Apr 5 2007, 04:54 PM
isn't it 16 cotters and 8 retainer since only the intake side is needed?
04-06-2007, 03:44 AM
#28
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i have cracked both ap1 and ap2 retainers.
the cracked ap2 retainers lasted 35000km in my case. just about to completely break too.. one more track day and my engine would probably been history.
check and change em regularly is my advice
the cracked ap2 retainers lasted 35000km in my case. just about to completely break too.. one more track day and my engine would probably been history.
check and change em regularly is my advice
04-06-2007, 11:29 AM
#29
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Originally Posted by fireball,Apr 6 2007, 06:44 AM
i have cracked both ap1 and ap2 retainers.
the cracked ap2 retainers lasted 35000km in my case. just about to completely break too.. one more track day and my engine would probably been history.
check and change em regularly is my advice
the cracked ap2 retainers lasted 35000km in my case. just about to completely break too.. one more track day and my engine would probably been history.
check and change em regularly is my advice
In any event, I totally agree with you about checking the things regularly.
It only takes a few minutes to check them, so we do it as a part of every oil change. On a stock AP1 the inspection is only really needed after an over rev, but it's so easy to do, I consider it cheap insurance.
I don't think anyone here has ever seen a stretched/cracked AP2 retainer. Got any pics?
04-06-2007, 11:32 AM
#30
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Originally Posted by RED MX5,Apr 6 2007, 11:29 AM
Are you stock? This is the first report I've seen of AP2 retainers cracking. On a stock AP1 the retainers usually only crack after a mechanical over rev.
In any event, I totally agree with you about checking the things regularly.
It only takes a few minutes to check them, so we do it as a part of every oil change. On a stock AP1 the inspection is only really needed after an over rev, but it's so easy to do, I consider it cheap insurance.
I don't think anyone here has ever seen a stretched/cracked AP2 retainer. Got any pics?
In any event, I totally agree with you about checking the things regularly.
It only takes a few minutes to check them, so we do it as a part of every oil change. On a stock AP1 the inspection is only really needed after an over rev, but it's so easy to do, I consider it cheap insurance.
I don't think anyone here has ever seen a stretched/cracked AP2 retainer. Got any pics?
BUT, my valve face was warped and my valve guides were warped...
go figure...the retainers were all fine.
