I swapped my stealth for a victor intake and found a problem!!

I have 5 out of 8 intake ports that are black. I'm guessing I have some seriuos valve to seat issues.
I run a solid cam and check the lash every 3 races. So I know the rockers aren't to tight.
The dove heads were built back in 2005 and have lots of mud drag and 1/4 mile passes on them. Maybe 400 passes in total.
Any ideas?

mike

Mike run it pull the heads over the winter amd do a valve job you dont have many more races this year left do you.

f250mike wrote:I have 5 out of 8 intake ports that are black. I'm guessing I have some seriuos valve to seat issues.
I run a solid cam and check the lash every 3 races. So I know the rockers aren't to tight.
The dove heads were built back in 2005 and have lots of mud drag and 1/4 mile passes on them. Maybe 400 passes in total.
Any ideas?

mike

FOUR HUNDRED passes on a race engine ...?
I would say it is well past time to get inside and look over things which do tend to wear out.

Compression test and a leak down test will give you some indications of whats going on.

Also look for leaky intake gaskets.

Randy, I never really considered it a race engine .
It's a low budget deal that I suppose has been neglected a little.
It's been running high 11 second passes. Do you suppose the exhaust valves are about the same?
Guess I'll find out soon.

Dave, I looked the intake gasket over real good and it appeared to be sealing fine.

Jim, I have 2 more points races and I'm done for the year. I might try to get these heads freshened and make a couple TnT days before snow flies.

Thanks guys

What are the engine specs?

It's a .060" over D9 block with stock crank, truck rods, and KB137 pistons.
Ported Dove heads with 2.19in./1.76ex valves. no flow #'s
Cam is a solid flat tappet. 254/261 @ .050 duration. .615/.635 lift
I was running a stealth with 850 holley. The victor is on it now with the 850.

Ok, today I tried out the victor intake on the truck.
This spring with similar air and temp the truck went best of 11.76.
The victor swap with no other changes netted me a 11.44. https://2img.net/h/i92.photobucket.com/albums/l26/mudmike/9-22-2012timeslip_zps0065cef4.jpg
I set a goal to run 11.60 this year. I think after today I have next years goal covered also!!

Thanks for the advice Rich Wilhelm!!!!!!!!!! The victor made a huge difference
One more race and I can get the leaky valves and the port match taken care of.

mike

Congrats on your new best time 3 tenths improvement is good for a intake change.

Later Mark.

rmcomprandy wrote:

f250mike wrote:I have 5 out of 8 intake ports that are black. I'm guessing I have some seriuos valve to seat issues.
I run a solid cam and check the lash every 3 races. So I know the rockers aren't to tight.
The dove heads were built back in 2005 and have lots of mud drag and 1/4 mile passes on them. Maybe 400 passes in total.
Any ideas?

mike

FOUR HUNDRED passes on a race engine ...?
I would say it is well past time to get inside and look over things which do tend to wear out.

As Sir Randy writes, all things being as they are, 400 (+/-) runs, I would think there would be a bit of "dirt" up the intake runners (tract). I would be curious at the end of your season, if the Victor's runners are discolored! Let me commend you on a good build that has brought you excellent service. Again as Randy wrote, time to give her the once over!

JM$0.02,
Dave.

Thanks for the advice Rich Wilhelm!!!!!!!!!! The victor made a huge difference
One more race and I can get the leaky valves and the port match taken care of.

mike[/quote]


Your welcome mike, Now you know how I feel about the torino engine,over 600 passes,and 10 years of run time on it, 8 different intakes,( 3 differnt victor intakes ) 10 different carbs 4 different converters tried ,5 different gear ratios, including a low gear set in the c6,2 different c6 trans ,valve bodies,and then we added nos,lol it needs a freshen,but we learnd some things testing .

BOSS 429 wrote:
Thanks for the advice Rich Wilhelm!!!!!!!!!! The victor made a huge difference
One more race and I can get the leaky valves and the port match taken care of.

mike

Your welcome mike, Now you know how I feel about the torino engine,over 600 passes,and 10 years of run time on it, 8 different intakes,( 3 differnt victor intakes ) 10 different carbs 4 different converters tried ,5 different gear ratios, including a low gear set in the c6,2 different c6 trans ,valve bodies,and then we added nos,lol it needs a freshen,but we learnd some things testing .[/quote]

That Torino motor runs pretty good....

yellowhorse7 wrote:

BOSS 429 wrote:
Thanks for the advice Rich Wilhelm!!!!!!!!!! The victor made a huge difference
One more race and I can get the leaky valves and the port match taken care of.

mike

Your welcome mike, Now you know how I feel about the torino engine,over 600 passes,and 10 years of run time on it, 8 different intakes,( 3 differnt victor intakes ) 10 different carbs 4 different converters tried ,5 different gear ratios, including a low gear set in the c6,2 different c6 trans ,valve bodies,and then we added nos,lol it needs a freshen,but we learnd some things testing .

That Torino motor runs pretty good....[/quote]i houht it was retired to cruise night beauty queen duty?

Thought...ughhh

That Torino motor runs pretty good....QUOTE;




lol,you should know, you have its sister

Barney wrote:

yellowhorse7 wrote:

BOSS 429 wrote:
Thanks for the advice Rich Wilhelm!!!!!!!!!! The victor made a huge difference
One more race and I can get the leaky valves and the port match taken care of.

mike

Your welcome mike, Now you know how I feel about the torino engine,over 600 passes,and 10 years of run time on it, 8 different intakes,( 3 differnt victor intakes ) 10 different carbs 4 different converters tried ,5 different gear ratios, including a low gear set in the c6,2 different c6 trans ,valve bodies,and then we added nos,lol it needs a freshen,but we learnd some things testing .

That Torino motor runs pretty good....

I thouht it was retired to cruise night beauty queen duty?[/quote] < no,I should,but for now its just resting