My car makes a ticking noise too. I just assumed it was a result from the Fast 90/90 combo swap. I've read it was a common thing, I'll just go with it. lol

 

Good luck. I don't know many people that have had good luck with the 1.85 rockers. Sounds like the stock rockers are going to be better for you.

 

Dyno'd again yesterday with the arms changed. See Saturday what difference it makes at the track!

 

The power is a little better, but the graph looks a lot better. Good luck.

 

So the big question is will it pick up .2/2 MPH. If it goes 11.20@120 I think mission is accomplished with this combo. Will the better curves and useable RPM pick it up that much?

 

You can take this for what it's worth. But if the longer pushrods doesn't quite it down then try a shorter pushrod. Long story in a short verison. At my H/C/I swap. My tuner put in 7.4 and it was pretty noticeable hearing it, he said if it don't get any quieter after I put some miles on it bring it back. When I took it back he put in some 7.35 and it quieted it down a bit. These are just noisy motors from what I read. The way I look at it for the power they put out, the hell with the sewing machine sound. When your wide open all you hear is exhaust. But every car is different and so is the setup.

 

2mph shouldn't be an issue!

Looks like your up almost 40hp from the dip in the previous graph. Your hp is almost flat from 5500rpm on. Nice curve.

 

Did you ever take the breather off? You could be missing some power there. I had a hole in my pcv system which is similar to having a breather. Once I got new pcv lines and ran them, my idle became rock solid, and the car ran better at part throttle. I didn't do back to back dynos but I've heard plenty of people say your losing power if your pcv isn't sealed properly

 

No and maybe I should try that one run to see. It was tuned on the dyno as-is with breather.

 

did you ever run it?

 

Holy Chit..................Guessing at pushrod length can be expensive in the long run....and I aint talking about all the sets of pushrods you bought and tried.

 

+1... just measure and do it once..

 

Yea best was the 11.41@119 in the sig

 

Wow that is a great time! And you were worried about 2 mph?????

 

Maybe the lift is killing me. Just figured this combo change would have netted 11.20@121. I was thinking .5/6 MPH gain but I got .4/4 MPH gain. Hoping to fit the Raptor but 10's may just not be possible at this weight NA

 

Is it your DD?

 

Nope... got a Honda for that and a bike. But when it is nice out I do drive it often and every so often 100 plus mile trips.


It's pretty docile and works. Just I know I am down on lift so the cam is a tweak that may net me some. Only motor **** I have really.

I may spray it at some point next year after I do a fuel pump. I'm thinking 150 shot.

 

Having a hole in your PCV system is not like having a breather. This would create a vaccum leak that would mess-up your idle. There's a reason why you cap the plug when you remove your PCV valve/system (bad idea) on the TB. If you don't you will have a huge vaccum leak. IMO running a breather is good because it allows fresh air to enter the crank case and helps with circulation.

 

Pardon me for being the idiot of the group, but the part about using stock rockers is interesting to me. Does that make a difference if its an A4 or an M6? Just looking for answers because I'm doing this mod myself in about a month.

 

It doesn't matter A4 or M6. What mod are you doing? You can use whatever ratio you want if you put the right spring. In my case I would have needed an even more aggressive spring to handle the weight if I had kept the 1.85's.