ti valves and springs

Go down

ti valves and springs

Post  ironbark on December 3rd 2013, 8:34 pm

what I have is 604 at 18 to compression on metho.
profiler heads the 205 series with TI valves, roller cam with around 800 lift 280 290 duration, now the springs are about 30 thou off from coil bind.
how long will the nextek triple springs last at a guess, and what issues am I looking for.

ironbark

Posts : 68
Join date : 2009-08-22

View user profile

Back to top Go down

Re: ti valves and springs

Post  Frank Merkl on December 3rd 2013, 8:55 pm

needs to be at .060" , .030" to tight and you'll end up breaking valve train and springs
Frank
avatar
Frank Merkl

Posts : 1458
Join date : 2008-12-17
Age : 62
Location : Brooks ,Alberta ,Canada

View user profile

Back to top Go down

Re: ti valves and springs

Post  Lem Evans on December 3rd 2013, 9:01 pm

Like frank said........060" above c.b. would be better.

Lem Evans

Posts : 7147
Join date : 2008-12-03
Location : Livermore , Ky

View user profile http://bfevansraceparts.com

Back to top Go down

Re: ti valves and springs

Post  ironbark on December 3rd 2013, 9:08 pm

thanks men, just seems to be no end to fixing what dynoflo have done.

ironbark

Posts : 68
Join date : 2009-08-22

View user profile

Back to top Go down

Re: ti valves and springs

Post  cool40 on December 3rd 2013, 9:21 pm

Check your installed height and psi.you may go with a +.050 retainer to get where you need to be.
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7168
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: ti valves and springs

Post  c.evans on December 3rd 2013, 9:54 pm

Sounds like somebody didn't order long enough valves, especially with just an .800" lift cam. Like the others have said, you need to be .060" away from coil bind. Your Manley NexTek triples have a top and a bottom. The chamfered edge is the top, and make sure they are installed that way. How's your rocker arm geometry looking?

Charlie

c.evans
BBF VENDOR SPONSOR
BBF VENDOR SPONSOR

Posts : 2214
Join date : 2008-12-03

View user profile

Back to top Go down

Re: ti valves and springs

Post  Bret Powell on December 6th 2013, 12:38 pm

Is it really .030 from coil bind or .030 from what the spring is rated from coil bind? Have they been checked? What the spring calls out as coil bind and what they actually are is often not the same.

Bret

Bret Powell

Posts : 133
Join date : 2009-08-30

View user profile

Back to top Go down

Re: ti valves and springs

Post  ironbark on December 6th 2013, 4:21 pm

I do have 60 thou, but Charlie is smack about the valves not having enough stem.
this is the same engine that landed here from the USA with the smashed lifters still floating around the sump, when it was first run it had a bigger cam around 900 lift and it smashed the lifters and they put in the current cam and sent it to me.
hoping to get the next season out of it and then rebuild the heads, just can not afford any more at the moment as I have spent another 20 thousand since it got here trying to fix what they have farked up. so far this engine has taken 18months and is has cost me $48 000. original quote 23 000.

ironbark

Posts : 68
Join date : 2009-08-22

View user profile

Back to top Go down

Re: ti valves and springs

Post  ironbark on December 6th 2013, 5:03 pm

anyhow this is a look at what it is now, ready to go.




ironbark

Posts : 68
Join date : 2009-08-22

View user profile

Back to top Go down

Re: ti valves and springs

Post  Dave De on December 7th 2013, 11:08 am

ironbark wrote:thanks men, just seems to be no end to fixing what dynoflo have done.
Is that Dynoflo out of Reno Nevada? I had a bad experience with them as well.
avatar
Dave De

Posts : 547
Join date : 2011-05-27
Location : Utica, MI

View user profile

Back to top Go down

Re: ti valves and springs

Post  ironbark on December 7th 2013, 5:27 pm

yeah they were from Nevada, personally I think they should donate their tools to a college and forget about cars.

ironbark

Posts : 68
Join date : 2009-08-22

View user profile

Back to top Go down

Re: ti valves and springs

Post  Dave De on December 7th 2013, 5:57 pm

ironbark wrote:yeah they were from Nevada, personally I think they should donate their tools to a college and forget about cars.
You are being kind. I am too embarrassed to tell you what they did to me. My problems with them were years ago, I see there hasn't been an improvement. We rolled the dice and lost.
avatar
Dave De

Posts : 547
Join date : 2011-05-27
Location : Utica, MI

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum