1.8 Rockers, can you use them with stock springs?

[lafenatu]

I am curious about using stock heads with a 1.8 pedestal rocker and stock valve springs.

Does anybody experience valve float? The car has 112K miles on it as we speak.

Thanks.

-Rob

[QwikGT]

My 1.8 roller rockers are on stock springs and i have 40K on my motor, my L36 had 68k with ZZP ER rockers and that was on stock springs too. you should be fine

[CrazyGuy03]

IF you want to do it right, upgrade the springs

[QwikGT]

so then i've been doing it wrong for 6 years?

[biggt]

My 1.8 roller rockers are on stock springs and i have 40K on my motor, my L36 had 68k with ZZP ER rockers and that was on stock springs too. you should be fine

IF you want to do it right, upgrade the springs

dont you have more chance of having ''valve float'' with stock springs?

[QwikGT]

3800 guys like to reinvent the wheel a million times, ive never had said valve float, my m90 never valve floated and my turbo doesn't float. changing the springs turns into the timing chain dampner to wear more, so why cause problems? the OP is gonna do what he wants, ive had my car for 6 years with 3 different setups and i never had a valve float issue

[matt5112]

L76 springs. Slightly more pressure but still very mild.

[gtpsleeper]

I have 1.84s and stock springs and have for almost 4 years now... they do just fine...

you will be more than fine as long as you dont up your shift points too high...

[Dragon1972]

Just think about it...you have 112k on those springs and we all know that heat deteriates spring tension, what do you think?

[Dragon1972]

Same pressures and same rate.

[Dragon1972]

L67

[Dragon1972]

How do you figure that you get timing chain tensioner wear with upping valve sping pressures?

[QwikGT]

Because of the higher spring rate you're wearing out the tensioner.

[Explicit_Spade]

You can run 1.8 and 1.9 ratio rocker arms with complerely stock heads until your shift points reach around 6000 RPMS. That is the ballpark for where valve float can happen.

These work with all stock or aftermarket pushrods, lifters, springs, retainers. They will not work with aftermarket cams. Aftermarket springs are recommended for shift points higher than 6000.

ZZPerformance - 1.9 Ratio Modified Rockers #ZZ-19MR

[TheOtherNick]

Keep it clean in here. Thanks GPF staff.

[gtpsleeper]

damn... didn see the posts before the editing... I miss everything

[Dragon1972]

There is no added pressure to the tensioner!!!

[Dragon1972]

Are you a moderator or the government?

[OH4CompG]

There is no added pressure to the tensioner!!!

So...... you've inspected timing chain dampeners after using 90# springs? It's not like this is the first time this has come up. Many individuals and vendors have noted more wear on the timing chain dampener due to springs with higher spring rate than stock. That's why a lot of people chose 105# springs over the 90's. 90's have stockish seat pressure but higher spring rate. 105's have stockish spring rate but higher seat pressure.

[matt5112]

Are you a moderator or the government?

What do you mean by this comment?

There is no added pressure to the tensioner!!!

There is a direct correlation between valve spring pressure and timing chain tensioner wear.