1.8 Rockers, can you use them with stock springs?

**lafenatu** · 02-25-2012

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** · 02-25-2012

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** · 02-25-2012

IF you want to do it right, upgrade the springs

**QwikGT** · 02-25-2012

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

**biggt** · 02-25-2012

Originally Posted by 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

Originally Posted by crazyguy03

IF you want to do it right, upgrade the springs

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

**QwikGT** · 02-25-2012

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** · 02-25-2012

L76 springs. Slightly more pressure but still very mild.

**gtpsleeper** · 02-25-2012

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** · 02-26-2012

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

**Dragon1972** · 02-26-2012

Same pressures and same rate.

**Dragon1972** · 02-26-2012

L67

**Dragon1972** · 02-26-2012

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

**QwikGT** · 02-26-2012

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

**Explicit_Spade** · 02-26-2012

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.

Originally Posted by ZZPerformance.com

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** · 02-26-2012

Keep it clean in here. Thanks GPF staff.

**gtpsleeper** · 02-26-2012

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

**Dragon1972** · 02-27-2012

There is no added pressure to the tensioner!!!

**Dragon1972** · 02-27-2012

Are you a moderator or the government?

**OH4CompG** · 02-27-2012

Originally Posted by Dragon1972

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.