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View Full Version : Does this sound normal for Cobra 1.7's?

EHardy1971
03-10-2009, 07:45 PM
I know roller rockers are a little noisy,but when I first crank it up,it sounds like a damn 7.3 Powerstroke. After a couple of minutes,they quiet down. I did'nt need to shim them,in fact, I'm thinking my pushrods might be a bit on the short side. I hit 22 ft lbs of torque after 1/4 turn of pre-load. Watch the clip,and tell me if these sound normal....

http://i273.photobucket.com/albums/jj228/ehardy1971/th_MVI_0335.jpg (http://s273.photobucket.com/albums/jj228/ehardy1971/?action=view&current=MVI_0335.flv)
QWKSNKE
03-10-2009, 08:10 PM
how would your pushrods be short? Did you not use stock length puchrods?
QWKSNKE
03-10-2009, 08:11 PM
If they quieten down after running for a bit, then there is a oiling issue somewhere or your lifters are weak
EHardy1971
03-10-2009, 08:18 PM
how would your pushrods be short? Did you not use stock length puchrods?
They're stock 6.25"
If they quieten down after running for a bit, then there is a oiling issue somewhere or your lifters are weak
I was thinking that as well. I know a couple of them had to pump up when I built the engine,and primed it before they got the pr's tight.
QWKSNKE
03-10-2009, 08:21 PM
Were they new lifters?
EHardy1971
03-10-2009, 08:27 PM
Were they new lifters?
Nope,they were fairly low mileage ones. Yeah,I know,I know......
QWKSNKE
03-10-2009, 08:30 PM
Nope,they were fairly low mileage ones. Yeah,I know,I know......

I am going to do it anyhow



:slap:

:D
EHardy1971
03-10-2009, 08:32 PM
I am going to do it anyhow



:slap:

:D
I deserve it!:yup: Oh well,I've been needing to pull the lower and port it anyway.
SlowJoe
03-10-2009, 08:34 PM
i ran the same rockers on my old gt-40 motor in the coupe. just uncap the headers:jester:
stangman
03-10-2009, 08:37 PM
Double :slap:
EHardy1971
03-10-2009, 08:41 PM
i ran the same rockers on my old gt-40 motor in the coupe. just uncap the headers:jester:
:spit: And my MIL thinks it's loud now!
coupe
03-10-2009, 09:21 PM
sounds fine in the vid to me.. :shrug: They're making noise, but it sounds about like a 1.7 should sound on an already pretty aggressive cam lobe. My 1.6 Pro-Magnum rockers are noisy too...have about 60,000 miles on them. I say run it.
EHardy1971
03-10-2009, 09:26 PM
sounds fine in the vid to me.. :shrug: They're making noise, but it sounds about like a 1.7 should sound on an already pretty aggressive cam lobe. My 1.6 Pro-Magnum rockers are noisy too...have about 60,000 miles on them. I say run it.
:nice: Yeah,plus having thin steel valve covers helps to amplify the sound. It's a noticeable difference across the powerband now though....



























....now that it's running on all eight cylinders!:D
jonosranger
03-10-2009, 11:40 PM
Every set of 1.7s ive ran or heard have been noisy
SilverBack
03-11-2009, 05:41 AM
My 1.6 Scorpions with an FTI cam sounds very similar.

Ed has a disclaimer on the cam card though....the cam will have a very mechanical sound because of the aggressive grind. I readjusted 2 or 3 times when we first got it going and chalked it up to the mechanical sound.
QWKSNKE
03-11-2009, 06:50 AM
sounds fine in the vid to me.. :shrug: They're making noise, but it sounds about like a 1.7 should sound on an already pretty aggressive cam lobe. My 1.6 Pro-Magnum rockers are noisy too...have about 60,000 miles on them. I say run it.

yeah mine were the same way on my last two anderson cams. sounded like two squirrels having a walnut battle under the valve covers.

My stock 1.7's were never noisy though. Of course the only cams that they ever beat up against was a 'b' cam in my car and a 'e' cam in PWT
TheJeanyus
03-11-2009, 07:15 AM
sounded like two squirrels having a walnut battle under the valve covers.
:lol:

What is it with '93 Cobras and walnuts? :jester:
qkjuicedpony
03-11-2009, 07:17 AM
:lol:

What is it with '93 Cobras and walnuts? :jester:

Is he talking about walnuts or WALsNUTS:jester:
86GTPONY
03-11-2009, 07:21 AM
My old setup with stock cam & Crane 1.7's was pretty noisy. I put in a "B" cam & used SVO 1.6's and it doesn't make half as much noise. Of course I used new lifters... :poke: :D
Dale McPeters
03-11-2009, 01:53 PM
:lol:

What is it with '93 Cobras and walnuts? :jester:

:rofl: :rofl:
Somebody needs to dig up the walnut picture that Brian posted....:jester:
coupe
03-11-2009, 02:06 PM
:rofl: LMAO...and the thread has gone downhill. LOL.
Italian LX
03-11-2009, 02:36 PM
:rofl: :rofl:
Somebody needs to dig up the walnut picture that Brian posted....:jester:
You mean the one of your trailer box full of walnuts...?



:D




http://myweb.cableone.net/blombardi/dale-walnuts.jpg
Dale McPeters
03-11-2009, 03:18 PM
:lol:

Yep that's the one...
EHardy1971
03-11-2009, 07:27 PM
:bowrofl: As soon as Lee mentioned walnuts,I knew where it was headed!
tayzoid1
03-12-2009, 05:37 PM
eric i have some frpp 1.7's on mine i can let you hear mine so we can compare i have had them on for a while now and no problems yet so i guess its safe to assume they are ok? lol give me a call ill pm you with my number
qkjuicedpony
03-13-2009, 08:57 AM
You mean the one of your trailer box full of walnuts...?



:D




http://myweb.cableone.net/blombardi/dale-walnuts.jpg

Is that the pregnant man that was on the news in the blue shirt?????

:D:D
coupe
03-13-2009, 09:00 AM
Is that the pregnant man that was on the news in the blue shirt?????:D:D
By golly...I believe you're right! :rofl:
TheJeanyus
03-13-2009, 09:05 AM
Is that the pregnant man that was on the news in the blue shirt?????

:D:D
:ohsnap:
Italian LX
03-13-2009, 09:59 AM
Is that the pregnant man that was on the news in the blue shirt?????

:D:D


Well, I have heard that guy puts out pretty readily. . .










http://myweb.cableone.net/blombardi/kidlee.jpg



:D
SlowJoe
03-13-2009, 10:04 AM
Well, I have heard that guy puts out pretty readily. . .










http://myweb.cableone.net/blombardi/kidlee.jpg


:D

:spit:
TheJeanyus
03-13-2009, 10:05 AM
:lol:
qkjuicedpony
03-13-2009, 10:06 AM
:rofl:
coupe
03-13-2009, 10:28 AM
:spit: :rofl: Sounds like he/she asked for it wearing that shirt! :nono:
QWKSNKE
03-13-2009, 10:50 AM
:slap:
qkjuicedpony
03-13-2009, 10:52 AM
:slap:

:jester:
EHardy1971
03-13-2009, 01:23 PM
:rofl:
EHardy1971
03-27-2009, 07:57 PM
Mystery solved. #4,and #2 exhaust rockers were loose. How the hell that happened,I don't know :think:. It was 1-2 am when I finished though,probably overlooked them from being tired.:shrug:
qkjuicedpony
03-27-2009, 09:03 PM
Mystery solved. #4,and #8 exhaust rockers were loose. How the hell that happened,I don't know :think:. It was 1-2 am when I finished though,probably overlooked them from being tired.:shrug:


Need more:meth: