Idle concerns - Mustang Evolution

Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 03-11-2005, 07:20 AM   #1
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
Idle concerns

I just recently noticed something odd about my engine when it idles. After listening behind the car for some time it sounds like durnig idle the rythem of the exhaust tone changes from time to time. It goes from a lopy muscle car sound to a less consistant less lopy sound. It just changes its rythem, I dont get why or how it could be doing this, I mean the firing order cant change so how could the rythem of the exhaust change?
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-11-2005, 09:09 AM   #2
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
You have the same cam as me and mine does that to. It goes from a uniform lope like a harley in sync then it i will get choppy and be out of sync. Most of that is due to the higher overlap with our cam. For a moment in the cycling of the engine the intake and exhaust valves are open the same time. This creates the lope and due to the fact we are 6 cylinders this causes for more uneven exhaust pulses. The V8 will actually do
this less do to the fact the time between the next exhaust stroke the more cylinders the less Harley effect the less cylinders the more Harley effect till you get to 2 cylinders and you have a harley which can lope about one exhaust stroke every half a second at idle

I have been talking to RGR and he has developed cams with much less overlap with increased HP
__________________
Danger Dude is offline   Reply With Quote
Old 03-11-2005, 09:56 AM   #3
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
Quote:
Originally Posted by Danger Dude
You have the same cam as me and mine does that to. It goes from a uniform lope like a harley in sync then it i will get choppy and be out of sync. Most of that is due to the higher overlap with our cam. For a moment in the cycling of the engine the intake and exhaust valves are open the same time. This creates the lope and due to the fact we are 6 cylinders this causes for more uneven exhaust pulses. The V8 will actually do
this less do to the fact the time between the next exhaust stroke the more cylinders the less Harley effect the less cylinders the more Harley effect till you get to 2 cylinders and you have a harley which can lope about one exhaust stroke every half a second at idle

I have been talking to RGR and he has developed cams with much less overlap with increased HP
These cams are actually available NOW, right away.
For what we talked about Corey, I could actually make a
substantially larger cam that is smoother. It would have
more duration @ .050" and less actual overlap. Only to
a point tho... but a cam with similar "lope" would be bigger
than the existing grind, and same LCA's. I need to work up
a trade in program for people wanting to upgrade...
__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-11-2005, 10:51 AM   #4
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
Quote:
Originally Posted by RGR
These cams are actually available NOW, right away.
For what we talked about Corey, I could actually make a
substantially larger cam that is smoother. It would have
more duration @ .050" and less actual overlap. Only to
a point tho... but a cam with similar "lope" would be bigger
than the existing grind, and same LCA's. I need to work up
a trade in program for people wanting to upgrade...

EXCUSEEEEEEEEEEEEE MEEEEEEEEEEEEEEEEEEE

I meant to say he HAS developed cams with much less overlap with increased HP

HAHHAHAHAHHA
__________________
Danger Dude is offline   Reply With Quote
Old 03-11-2005, 12:15 PM   #5
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
^^^ NutCase ^^^



Thanx for that clarification Corey!
I actually did a few with the old list,
but one was lucky to get 2 lobes of the same .050" that
were distinctly different. Actually, I have one guy now
that is using the same basic .050" durations as you guys
and in a heavy auto tranny T-Bird, he says the power just
blows him away and he doesn't even have the tune yet!

His 215 cam vs. the old 215 cam:

NEW 215 lobe......Old 215 Lobe
215*...................215....................050 duration
.576"...................495"...................total lift w.1.73's
He is running .599" lift with the 1.8's, that adds 4* more total
valve action on average. I like his grind because it is better matched
than the old 215/225 cams, that was my first SC spec grind for big
boost, I'd use less exhaust duration for NA and street SC setups.
You all got my old SC grind, but it was not sold or specced by me,
lots of people pick these up used and while it is a good cam it is not
the best for everyone. Even For Josť, who the cam was originally
specced out for, I would change up a few items now, considering
the grind availability and the fact that I am a better cam guy now.
That cam was done nearly 6 years ago and we have better springs
and better cam lobes both, plus a better understanding of what these
engines need for the given application.

JUST IN CASE anyone still thinks I spec cams for RPM, think again.
I only spec cams for RDMotorsport, and my RGR-Alumni that need upgrades.
I did not train anyone in cam specs and will not divulge my specs.
But I can get the econo grinds still, if someone can't see the wisdom
in getting the better lobes for a few bucks more. I'll do the best I can
with the old spec lobes. It's just like trying to plow with a horse instead of a tractor
__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Old 03-11-2005, 12:31 PM   #6
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
Okay, this makes since, glad to know it! I spliced in my new TPS from Rob and it seems to have helped alot with the idle. It still doesnt idle down imediately but I guess thats normal.
Its weird cause my idle seems more consistant now as far as the lope goes... weird.
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Old 03-11-2005, 12:38 PM   #7
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
Maybe Bro. Corey could idle smoother if his TPS was adjusted.
ya think Bro?
RGR is offline   Reply With Quote
Old 03-12-2005, 05:50 AM   #8
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
Quote:
Originally Posted by RGR
Maybe Bro. Corey could idle smoother if his TPS was adjusted.
ya think Bro?
Hmm, maybe, it seems like my idle is way more consistant now. I will be listening to it to see for sure...
One thing that dissapoints me a bit is the fact that it still takes a good six seconds to idle down. Its better, but still not normal. Maybe its my splicing technique or something...
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Old 03-12-2005, 09:31 PM   #9
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
No I found what my problems were I think. I installed my BV head and Matching lower today. What I found was startling

1. I had 2 bent push rods. One was bent in 2 places.
2. The cylinder that had the worse bent rod also had the tip of the 19# injector sort of melted. After careful surgery. I repaired it and it is spraying just fine.


While I was at it I reconnected my PCV valve and vaccum line form the drivers valve cover to the CAI. I was tired of smelling oil whrn the AC or the heat was on.

UI have not started it yet because as I was putting on the Radiator plastic drain plug it cracked so it sits until tomorrow ARGGHHHHHH
__________________
Danger Dude is offline   Reply With Quote
Old 03-12-2005, 10:10 PM   #10
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
So I take it you had replacement pushrods availible? How did you valves look in your old heads? Man, bent pushrods cant be good for performance. Im sure you will be a much happier person with your BV heads and straight pushrods.

Keep us updated!
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Old 03-12-2005, 10:47 PM   #11
Legacy Member
Legacy
 
slvr2000stang's Avatar
 
Join Date: May 2003
Region: Illinois
Posts: 1,160
Holy crap.

Good thing you opened it up before the race.
__________________
Custom Delk motor now DOA
2003 SVT Lightning #1059 of 4270
2000 Vert 4R70W
Only buy from vendors that test and stand behind their products
slvr2000stang is offline   Reply With Quote
Old 03-12-2005, 10:54 PM   #12
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
Who knows how much HP it was costing me. I am about to make a post with pics on todays Tech day
__________________
Danger Dude is offline   Reply With Quote
Old 03-12-2005, 11:01 PM   #13
Legacy Member
Legacy
 
97Stallion's Avatar
 
Join Date: Nov 2003
Region: Missouri
Posts: 1,461
Send a message via AIM to 97Stallion Send a message via MSN to 97Stallion
Outstanding, glad to hear you FINALLY got those heads on there. You know I've been trying to get to work on this intake i'm trying to design, it should help out quite a bit if I can ever find the materials for it. That's my biggest problem at the moment.
__________________

60' ~ 2.1, 1/8 ~ 9.61 @ 73.4mph
Living one day at a time!

DAMN Those are some old *** numbers!!! I need updated ones!!
97Stallion is offline   Reply With Quote
Old 03-13-2005, 08:33 AM   #14
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
:hammer: :hammer: :hammer:

Dang, that is bad news! You needed something, better
springs or shimmed PR's... Let's make sure this one is
right b4 you crank it! I can call ya DD. LMK
__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Old 03-13-2005, 03:27 PM   #15
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
She is running great. 75% of the shaking is gone. Idles better. Well get to a dyno ASAP
__________________
Danger Dude is offline   Reply With Quote
Old 03-13-2005, 04:52 PM   #16
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
Quote:
Originally Posted by Danger Dude
She is running great. 75% of the shaking is gone. Idles better. Well get to a dyno ASAP
Bad out dude, you should post some pics of them bent pushrods.
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Old 03-13-2005, 07:28 PM   #17
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
I still have the bent rod I will take a pic tomorrow
__________________
Danger Dude is offline   Reply With Quote
Old 03-13-2005, 08:29 PM   #18
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
Can't wait!

__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Old 03-13-2005, 09:33 PM   #19
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
Quote:
Originally Posted by RGR
Can't wait!

Here you will see towards the top of the rod in the picture is bent but what you can see it the bend in the middle going the other direction and the scuff marks from it rubbing on the Rod passage in the head
Attached Thumbnails
Click image for larger version

Name:	100_0545.JPG
Views:	137
Size:	54.4 KB
ID:	7112  
__________________
Danger Dude is offline   Reply With Quote
Old 03-14-2005, 07:31 AM   #20
Registered Member
Regular
 
Join Date: Aug 2003
Region: Texas
Posts: 168
Send a message via Yahoo to 98GreenStallion
My gosh dude, thats bent alright. I wonder how it got like that? Were the rockers too tight or something?
__________________
http://images.cardomain.com/member_i.../402003_35.jpg

Mods: BV heads, cut and weld upper, fully ported lower, 216/225 cam, 1.73 RR's, 60mm TB, 19# injectors, new timing set, 25% UDP, CAI, SCT chip, PCV delete, EGR delete, MAC LT headers, O/R H-pipe, durablack cat-back...

www.rpm-mustangs.com

RDmotorsport

New dyno
193.8rwhp/238.9 rwtq
98GreenStallion is offline   Reply With Quote
Old 03-14-2005, 07:57 AM   #21
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
2: 2:

I assume you have shims now Corey???
__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Old 03-14-2005, 08:58 AM   #22
Legacy Member
Legacy
 
Danger Dude's Avatar
 
Join Date: May 2003
Region: South Carolina
Posts: 5,187
Send a message via AIM to Danger Dude
Here is the interesting thing I had shims on the stock rockers with harden longer push rods. What else is interesting is I used Harland Adj 1.73 RR's this time and I still needed shims. As it says in the Ford maintenance manual. tighten the rockers down till verticle movement is gone and you can still spin the push rod. So I dont know who it was to tight but stranger things have happened

The Reason. The longer push rods did not allow for adjustment so I had to add shims to be able to have some room for adjusment.

MORAL OF THE STORY !!! IF YOU DO A CAM SWAP AND YOU USE LONGER PUSH RODS BE SURE TO SAVE THE STOCK PUSH RODS IF YOU ARE GOING TO USE ADJ RR"S
__________________
Danger Dude is offline   Reply With Quote
Old 03-14-2005, 10:40 AM   #23
RGR
Registered Member
Regular
 
Join Date: May 2003
Region: Indiana
Posts: 1,065
Send a message via AIM to RGR
Hmmm, I'd like you to help me on a how-to then, Rob and I are
going to advocate better pushrods, and they will not have as
much likeliness for needing shims with reground cams.
Those older ones like you have are a good alternative for many
setup, but when I started using them they fit most single port
regrinds. Many smaller SPI regrinds need shims since the base circle
reduction is less, but the PR's are lots longer. Unfortunately the
stockers are still too short for many regrinds.
__________________
Originally Posted by Flex:
You are the true cam master dude...
RGR is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 4 Cylinder | V6 | Classic Mustangs || Tech and Talk > Pre-2005 V6 Mustang

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Idle Problem Help!! W225110 1979-1995 Mustang GT 7 03-30-2010 08:12 PM
EGR delete concerns sledgehammer Pre-2005 V6 Mustang 14 01-08-2010 12:52 AM
Doesn't idle down. Joe_SHO Pre-2005 V6 Mustang 7 02-12-2009 08:44 AM
ruff idle noslow5ohh 1979-1995 Mustang GT 11 07-02-2008 10:01 PM
At idle ASSEMbler Pre-2005 V6 Mustang 14 08-07-2003 02:54 AM

» Like Us On Facebook



07:03 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.