ERA 427 with 428 and Holley carb want to swap for Edelbrock

[blykins]

Originally Posted by fdjake

I love my ERA....Just getting frustrated with some minor stumbling issues....If I get nice off idle acceleration, the wot seems to suffer, if wot is good it stumbles off idle.

That should be easy to fix....hopefully they'll set you up.

And it all depends on which Holley you have. Some are more tunable than others.

Have them check your timing and the timing curves as well.

[jhv48]

Jeez. Give it a rest will ya!

Now back to the problem at hand. Oftentimes an off idle stumble is a temp lean condition that can be fixed with a slightly richer idle screw adjustment or an earlier/larger squirter. Make sure your squirters squirt as soon as the throttle moves. Both very easy to do at home. Let us know if you want help on these two issues.

[Bobcat]

Brent .... you have a pm .

[decooney]

Getting a professional tuner involved is the way to go especially when you are at the point where you don't know what the root cause is and you are ready to throw a bunch of new parts at it.

If you have a smallish Holley running on your 428, with more open and flowing ERA sidepipes, it could be a lean stumble in the transition circuit, or a combination of fuel and timing advance needing some fine tuning by a professional who is great with carbs too. A good tuner will get you going in the right direction with proper diagnosis.

[Bobcat]

FWIW ... I played with an Ebrock carb on mine . I had to modify it some to get it to work . It ran ok out of the box , but it never made as much power than my Holley . You need to raise the float levels to the max setting , block off the crossover channel between the two float bowls and change a few other things on the fuel lines and linkage . I also removed all the choke mechanism and set the secondaries to come in much sooner than stock . A lot of work and it still won`t out perform my Holleys . However , don`t get me wrong ... it was still a good street carb , but I also do track days and wanted a carb that would work on the track with a minimum of changes .

[fdjake]

UPDATE....I dropped off my 427 at ERA today and was treated like a long lost family member! I got an awesome tour of the GT40 works and saw a lot of really beautiful cars.

As far as my car goes....ERA recommended a QUICK FUEL CARB!!!

They will be ordering one for me, installing it and taking care of some other items.

Thanks guys for all the advice and THANKS ERA for treating me like gold today!

[kgs365]

recently had a stumbling problem with the holly...changed springs, jets etc...ended up with a Quick Fuel...no problems since....and yes going back to the mother ship does feel good!...part of me misses the build days and visits to the New Brittain crew

Originally Posted by fdjake

UPDATE....I dropped off my 427 at ERA today and was treated like a long lost family member! I got an awesome tour of the GT40 works and saw a lot of really beautiful cars.

As far as my car goes....ERA recommended a QUICK FUEL CARB!!!

They will be ordering one for me, installing it and taking care of some other items.

Thanks guys for all the advice and THANKS ERA for treating me like gold today!

[Grubby]

fdjake,

Which Quick Fuel did you end up with? More details would be great.

John

[fdjake]

The car is at ERA right now being serviced. I'm having them install the Quick Fuel carb (which they ordered) They are also installing a set of "quiet side pipes" to drop the DB's a bit.

The work should be done in a week or two.

I'll let you know which quick fuel carb I ended up with and the results.

[Grubby]

I have there standard pipes which are much quieter than the standard pipes that were on my early ERA. I think you will be happy.

John

[kevins2]

Originally Posted by fdjake

They are also installing a set of "quiet side pipes" to drop the DB's a bit.

The work should be done in a week or two.

Hi FDJake,

I ordered my ERA with the ss quiet side pipes and expect to receive the kit in early November. It will be a while before I get a motor in it and start it up and I've never heard the pipes. Let us know how they sound when you get your car back.

Kevin

[fdjake]

My car is chassis # 717 with I'm assuming standard pipes. Even Peter P. commented on how loud the car was when I dropped it off. I'm hoping the quiet pipes drop the sound level to something not as painful.

Heck, I couldn't drive the car in the early mornings out of respect for my neighbors. It was just too loud. At first it was great but it gets old after a while.

[decooney]

fdjake,
Do you know which vendor sourced the exhaust sidepipes to ERA for your car?

The reason I ask is the older pipes I had on ERA 623 were old school more restrictive heavy glasspaks with a high pitch popping sound to them. I swapped them out for stainless speciality exhaust and it sounds totally different, less poppy sounding and deeper with lower frequency. Recently someone mentioned their recently built ERA (700 range) came with pipes from Stainless Specialties. What I don't know is if ERA put those on or if the customer did. I'm wondering which "standard" exhaust muffler you have on your car today, and what ERA is going to change it to in order to make it quieter. Any details shared by Peter or others there?

[fdjake]

No details...But I will ask when I pick up the car.

I'll let you know.

[kevins2]

Originally Posted by fdjake

My car is chassis # 717 with I'm assuming standard pipes. Even Peter P. commented on how loud the car was when I dropped it off. I'm hoping the quiet pipes drop the sound level to something not as painful.

Heck, I couldn't drive the car in the early mornings out of respect for my neighbors. It was just too loud. At first it was great but it gets old after a while.

Hi FDJake,

My thoughts exactly and why I ordered the car with the stainless "Quiet" pipes. Most of the non-stainless pipes are fiberglass packed. They sound good new but the fiberglass deteriorates over time and they get louder. My Harley has glass packed pipes and is noticably louder now than when they were new. When I first start it, it sounds awesome but gets old just as you said above. I can pull the baffles and put new fiberglass in them but you can't do that with the sidepipes on a Cobra.

Duane, I'm pretty sure Peter mentioned that the quiet pipes are from Stainless Specialites, but they may have multiple sources so check to be sure. The SS quiet pipes from ERA are $2,350, including the rear brackets.

Regards,

Kevin

[RET_COP]

You will be happy with a QF holly style carb. AED and Pro-systems also have good carbs. I have a Pro-System. I think Patrick's carbs are geared for race cars but with a little tuning my 780 is flawless. Good Luck!!
Lou

[decooney]

Kevin,
Thanks, I used the original pipes on mine and inserted the SS mufflers myself so I have no point of reference as to exactly what muffler options ERA uses today. People here in CA will ask what exhaust I have or what to order for theirs new or for swaps. One of my baffles is rattling now inside the muffler, and I want to see how the baffles look or have been changed in the newer quieter SS version.

BTW: Noticed you are in West Chester PA. This is where my mother was raised and grandparents lived. Drove right past there two weeks ago. Spent a bit of time in Media as a kid over the summers.

[kevins2]

Duane,

I'd call Peter - he'd probably be fine with putting you in touch with someone that could answer those specific questions. Peter told me they managed to design these quieter pipes without costing additional HP. My response to him was that defies the laws of physics but didn't pursue it.

As for West Chester, PA. get in touch if you're in the area again. Beautiful area to have a Cobra replica - 1,000's of miles of scenic country roads. Biggest concern is deer...

I look forward to hearing FDJake's comments on the quiet pipe's sound when he gets the car back.

Regards,

Kevin

[decooney]

Thanks Kevin. I will talk to Peter and Bob.

I suspect ERA is now offering something that a few of us on CC have been testing with for some time now over the past eight years with SS mufflers. Yes, its true, more flow and less crackle-pop sound using a muffler design that offers some noise cancelation of the higher frequencies; there are years of threads on this alone. This inquiry relates to something else and goes back to my other comments about some here on CC right now experiencing lean carb and jetting issues due to more freeflow sidepipe mufflers. I had to go up four jet sizes (pri/sec) just to compensate for the difference. I know the folks at SS and can inquire there too. The evolution of muffler design for noise vs. performance is slow and developing, but still evolving some believe it or not. Thanks.

[kevins2]

Hey FDjake,

Did you get your car back yet? Still want to hear from you on how those stainless steel quiet pipes sound. I did confirm with Peter that they source their pipes from Stainless Specialties.

Regards,

Kevin