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Author Topic:   All this talk about lash...
MrWesson22
Gearhead

Posts: 1209
From: Dacula, GA
Registered: Sep 2000

posted 01-09-2003 11:25 PM     Click Here to See the Profile for MrWesson22   Click Here to Email MrWesson22     Edit/Delete Message   Reply w/Quote
has got me thinking (and that's a dangerous proposition!). Where should my lash be set on this cam for optimum reliable performance?

282/288 244/252 108LSA .590/.600

It's a comp cams xtreme energy solid flat tappet (custom). Any thoughts?

------------------
Neal

69 Gulfstream Aqua Grande
351C/4sp
https://mustangsandmore.com/ubb/MrWesson22.html

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Moneymaker
Administrator

Posts: 19704
From: Lyons, IL, USA
Registered: May 99

posted 01-09-2003 11:35 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
About .030 accross is where I would start.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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Ryan Wilke
Gearhead

Posts: 1501
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 01-10-2003 08:46 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Originally posted by Moneymaker (on different thread): "I would not recommend running over .035 lash on your cam Blue..."

Hey Alex, What would you say I could safely extend the lash on MY solid-lifter cam?

UltraDyne says to run the cold lash @ .026"; hot @ .028"...

other specs: @ .050, 252/260 dur; max lift .586/.608; 106* lobe sep. Using Crane #11746-16 (1.6, 3/8" stud) roller rockers w/polylocs; on 306" eng w/4-spd & 4.56 gears.

Thanks! Ryan

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Moneymaker
Administrator

Posts: 19704
From: Lyons, IL, USA
Registered: May 99

posted 01-10-2003 10:55 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
.010 to .012

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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Ryan Wilke
Gearhead

Posts: 1501
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 01-10-2003 11:11 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Thanks, Alex!

Ryan

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MrWesson22
Gearhead

Posts: 1209
From: Dacula, GA
Registered: Sep 2000

posted 01-10-2003 11:12 AM     Click Here to See the Profile for MrWesson22   Click Here to Email MrWesson22     Edit/Delete Message   Reply w/Quote
Cool. I've got it at .030 int/ext right now. Now I don't have to mess with it. Woohoo!

------------------
Neal

69 Gulfstream Aqua Grande
351C/4sp
https://mustangsandmore.com/ubb/MrWesson22.html

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Moneymaker
Administrator

Posts: 19704
From: Lyons, IL, USA
Registered: May 99

posted 01-10-2003 11:20 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
But Neal, that would not inhibit me from playing around. I would try .035 next time you have the valve covers off.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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kid vishus
Gearhead

Posts: 4538
From: middle of NC
Registered: Oct 2000

posted 01-10-2003 11:37 AM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
All this talk about loose lash has me thinking UH-OH. So I have a question, actually a couple. The questions are based on if I opened my lash up from the card recommended .026/.028 hot to something like .040 (they are set at .024 right now trying to kill some bottom end and get more mph).

Wouldn't opening the lash up too much cause the car to be inconsistant due to the lifter not being launched off the lobe the same all the time? I could see how it would make it faster, but that surely isnt something for a weekend bracket racer to try (more for an all out heads up race maybe?). Also, wouldnt that get hard on the camshaft and lifters after a relatively short period of time. I'm just wondering. It seems like the lifter leaving the lobe and the subseguant re-contact would be real hard on stuff pretty quickly. Espeically with a roller cam as I was under the impression that the needle bearings in the lifters are fairly fragile and dont like to be bounced on the cam, or sudden impacts.

Am I way out in left field on this one?

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n2oMike
Gearhead

Posts: 1547
From: Spencer, WV
Registered: Jan 2001

posted 01-10-2003 01:39 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by kid vishus:

Wouldn't opening the lash up too much cause the car to be inconsistant due to the lifter not being launched off the lobe the same all the time? I could see how it would make it faster, but that surely isnt something for a weekend bracket racer to try (more for an all out heads up race maybe?). Also, wouldnt that get hard on the camshaft and lifters


Again, read this...

https://mustangsandmore.com/ubb/Forum12/HTML/002954.html

It should answer your questions.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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kid vishus
Gearhead

Posts: 4538
From: middle of NC
Registered: Oct 2000

posted 01-10-2003 01:56 PM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
OHHHHH!

I remember reading that the first time around.

Thanks Mike.

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