comp cam install and then bad sounds

[jay4581]

has anyone installed a comp cam and ran in to any changes or problems:exp:

 

[91exploreron37]

I had a major change in HP! jk but really what kind of problems are you having? and what cam did you install? Also did you install new pushrods and what condition were your lifters in?.

 

[seth247]

yes need more info

 

[jay4581]

i installed a 49-410-9 cam, it sounds like valve clatter as if the pushrods are not long enouf

 

[91exploreron37]

Yea you will need different length pushrods

Are you going to re-use your stock rocker arms? Or are you going with the upgraded ones from Delta Cams? Reason I'm asking is this will affect the length of the pushrods you order.

Stock rocker arms: order 5.550" pushrods
Delta Cams Rocker arms: order 5.525" pushrods

In addition to that they're going to need the year. make, and type of motor you have. (i.e, ford 19xx 4.0l OHV v-6)

If you're wondering what the Delta Cams rocker arms are...basically there is a durability issue with the stock rocker arms. There is a cup where the pushrod sits and that cup as well as the pushrod gets worn. This causes a valve tapping like noise in older 4.0's that you might be familiar with. What the delta cams rocker arms have is a hardened steel cup pressed into them so that the pushrod doesn't wear on the rocker arm. The delta cam rocker arms are another good investment in the longevity of your motor but not a requirement....I think a set of them runs about $250

You can order the pushrods from smithbros

 

[91exploreron37]

Found the site
http://www.pushrods.net/

 

[seth247]

i installed a 49-410-9 cam, it sounds like valve clatter as if the pushrods are not long enouf

you've hit the nail on the head!

Like 91exon37s says need longer'uns.

You won't get the benefit of the bigger lift till you use longer pushrods.

 

[jay4581]

thankyou all!!!:exp:

 

[91exploreron37]

No prob Let us know how it turns out

 

[jay4581]

she runs and is right anyone know how to adjust timing she pings under full load

 

[little x]

Mine did that after I installed the 410. I had to switch to premium.

 

[jay4581]

i also took it for a ride she has no nut i could pull a hill without putting down into first on the street

 

[jay4581]

come to find out that i am pushing oil into the cyl. bad rings

 

[91exploreron37]

Man that sucks. Well at least now you have an excuse to bore it out or stroke it

 

[jay4581]

motor back from machine shope, i am using an 00 block pistons and crank with the 93 non cal. heads and cam. the comp. should be higher than stock will let you know how it turns out:exp:

 

[SPORTEXP]

she runs and is right anyone know how to adjust timing she pings under full load

Have you tried removing the octane adjust shorting bar, it retards the timing 2 degrees.

 

[91exploreron37]

We have those? Where is it located on the X?

 

[SPORTEXP]

http://www.explorerforum.com/forums/showthread.php?t=183334&highlight=octane+adjust this is next to the EEC test block behind the air cleaner.

 

[jay4581]

im game should i keep it unpluged any thing bad going to happen

 

[SPORTEXP]

Nothing bad will happen. I done this years ago when I had a carbon fowling problem from a leaking intake. Just turn the key off, pull the shorting bar, and start and run. Throw the shorting bar in the glove box, you run the car with the bar removed. If you change your mind, make sure key off, replace bar then start and run again.