i am thinking about getting the 1.9 rockers from zzp. i was wondering if i need to get new pushrods or springs also. and will i notice a different when i get them on?
thanks!
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11-11-2009
i am thinking about getting the 1.9 rockers from zzp. i was wondering if i need to get new pushrods or springs also. and will i notice a different when i get them on?
thanks!
11-11-2009
From ZZP's website: ZZ PerformanceOriginally Posted by grand2000prixgtp
They will work fine with stock springs and pushrods. The only thing I would worry about is if you are running stock springs, and they are high mileage, you might want to replace them so you don't break one.These work with all stock or aftermarket pushrods, lifters, springs, retainers.
As for noticing a difference, yes, you will.
Higher Ratio Rocker Arms
11-11-2009
get the yella terra rollers. They come with everything you need. You might want to get a set of springs, I use L76 springs, $80, they work well.
fwiw you only notice the gains in the upper rpm range
11-11-2009
alright. is there anyway to change out springs with out taking the head off?
11-11-2009
yeah, compressed air and a valve spring tool.
11-11-2009
alright thanks. and i saw that there is 1.9 and 1.95 should i just stay with 1.9 also will have to get a tune?
11-11-2009
if youre serious about rockers and dont plan on switching to a cam later and youre going to switch the springs anyway then just the the 1.95s.
11-11-2009
Or the old rope trick.
And you don't need to get a tune. But you will notice quite a difference with a tune.
11-11-2009
yes you should get a tune, especially because you already have a zzp tune for the gtp. Do you have a way to scan your KR and A/F ratio?
11-11-2009
Tune is always recommended....even on a stock car it can make a world of difference in performance and economy.
11-11-2009
i dont right now i plan on getting a aeroforce gauge some day soon.
11-11-2009
what is the rope trick
11-11-2009
You will want some springs better than stock to prevent valve float on 1.9's or 1.95's. Also make sure to get a new set of valve seals when replacing springs.
11-11-2009
yea ill get all new parts when doing this
11-11-2009
You will need to purchase a air/fuel wideband adapter or separate gauge because the aeroforce's do not monitor this stock
11-11-2009
your going to need lsx style retainers as well.
11-11-2009
CAAaaaaaaaMMMMMMM
Or go home
11-12-2009
The rope trick is an old trick that instead of pressurizing the cylinder via the spark plug hole, you basically bring the cylinder to TDC and push a bunch of rope in the spark plug hole. Then when you take off the retainers, the spring doesn't fall all the way down in.
11-12-2009
if the cylinder is at TDC the valve cant fall in the cylinder anyway, its just a pain in the ass to turn it over for each cylinder.
11-13-2009
On some vehicles, it can fall enough to not be able to pull it back up. Just a good rule of thumb if you are not sure to stuff some rope in. And if you have the plugs out to change the valves, turning most engine over isn't hard. In fact, if you are going to use the air compressor method, you have to find the point where both valves are closed, so you still have to turn the engine over at some point.
But I was just giving an alternative that I have heard. I never used it. Actually, I never changed valves on a head with them still on the engine. But for someone that doesn't want to make a tool to pressurize the cylinder or doesn't have the means to do so, this is a good second choice.
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