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05-18-2017, 01:55 PM | #1 |
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Valve Tulipping
I have a 582, BBC, with BB3xtra Oval port heads, 2.350 SS Manley Intake valves. The motor has about 60 runs. I have (2) valves that have tulipped. Motor runs about 7300 rpm through the traps. Motor has never been over-heated or run lean. Antone have any experience or thoughts about what may cause this???????
Thanks, Dan Foley |
05-18-2017, 02:42 PM | #2 |
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Re: Valve Tulipping
With that large valve you need to go with a light weight tiatanium valve. The steel valve is hard on the springs and they tend to do what you describe in a short time.
2.200 is as large as I would ever go with steel and larger than that I go with tiatanium. I believe a Brodix rep gave me this same recommendation some years ago. Just My 2 Cents and experience. Rick Cates in TX |
05-18-2017, 03:16 PM | #3 |
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Re: Valve Tulipping
I agree that titanium valves are easier on springs, but, there are too many Brodix heads with this size SS valve running w/o this happening. I've previously talked with Jeff Brotherton, from Brodix, and asked if titanium valves were worth the investment with my combination. He didn't think I would benefit from them. I am wondering if the springs were weak that it may be hard on the valves and cause them to slam into the seats too hard or too often.
Dan |
05-18-2017, 07:10 PM | #4 |
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Re: Valve Tulipping
The biggest benefit with titanium valves is the maintenance factor. I have not used a SS intake valve since the early 1990's.
Titanium is so much easier on the entire valve train. Just My Experience Rick |
05-18-2017, 07:28 PM | #5 |
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Re: Valve Tulipping
We agree that titanium is better but, according to the cylinder head specialists Brodix, they aren't required. Bordix is even at a loss as to what happened.The real question I had is what caused the valve to tulip?
Dan |
05-23-2017, 12:44 PM | #6 |
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Re: Valve Tulipping
Probably just a couple of bad valves. I have had bad luck lately with Manley SS exhaust valves. I have had 2 exhaust valves drop the heads off and destroy 2 good engines in the past couple of years. The last set only had about 75 runs on then. These are small diameter valves too. I guess I will start to change the valves at 50 runs from now on. The Manley stuff does not seem to be as good as it used to be.
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