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#2049004 - 05/17/10 10:44 PM More HP, +Revs MMR 2 /4 Valve Camshaft Spacers
AODE Offline
Over the Hill

Registered: 07/27/02
Posts: 2551
Loc: Ohio
In the machine shop today seing built modular engines.

I told the machinist about the 5.4 and 4.6 having some issues with high reving to get to their power band fast, like imports.


The little secret, not known to us for the 5.4 AND 4.6, are Camshaft Spacers.

Did you know these little guys reduce important drag weight by 80% compared to stock!

Apparently 15HP N/A 4.6 and an increase in rpm's by 850rpms min, can be obtained using these little guys.

Bolts up like stock and no other mods needed,


The non pi intake , 5.4 truck intake, non pi cams, 5.4 Truck cams are poor revving parts to begin with , as well as stock timing, .
_________________________
2000 CV
5.4 LIGHTNING SWAP +4 psi pulley
350 HP
450 Lbs Torque

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#2049012 - 05/17/10 10:51 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: AODE]
Quickvic30 Offline
Just watchin
Grand Poobah

Registered: 02/24/05
Posts: 10922
Loc: Minneapolis, MN
Got a link to this part/info?
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#2049074 - 05/17/10 11:52 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: AODE]
73vwTodd Offline
Over the Hill

Registered: 02/08/10
Posts: 3913
Loc: Florida
 Originally Posted By: AODE
In the machine shop today seing built modular engines.

I told the machinist about the 5.4 and 4.6 having some issues with high reving to get to their power band fast, like imports.


The little secret, not known to us for the 5.4 AND 4.6, are Camshaft Spacers.

Did you know these little guys reduce important drag weight by 80% compared to stock!

Apparently 15HP N/A 4.6 and an increase in rpm's by 850rpms min, can be obtained using these little guys.

Bolts up like stock and no other mods needed,


The non pi intake , 5.4 truck intake, non pi cams, 5.4 Truck cams are poor revving parts to begin with , as well as stock timing, .


It's been a while since I've taken apart a DOHC or SOHC motor, but I assume you're talking about the little rocker arm thingies that ride the overhead cam on one side and push on the valve stem with the other?

Speaking off... are those cam followers roller (not just roller fulcrum)?

I know that by replacing the cam followers you can increase the overall lift (not duration however). This is typically only good for peak hp from what I remember and doesn't really do much for an overall driver. The only thing I wonder is how radical it can go? If it's riding the cam at all times, it expects the flat part of the cam to always be at a specific level. If you change the cam follower slightly, then you're actually causing the valve to open slightly even when closed? I think? I guess???

Found a picture of what this website calls the "cam followers"


They look like straight roller fulcrum bearing rocker arms though.

I think the cam follower actually is the little "cup" that sits on the cam that pushes on the rocker arm? Who knows... maybe I'll pull a valve cover off a 4.6 next time I'm at the junkyard.

I would like to know if everyting up there is roller though... you could really free up some resistance and power.

Made a noticeable difference in my 2.8 V6/60 Fiero when I wet from 1.5:1 stamped steel rocker arms to Crane 1.52:1 roller tipped rockers. The .02 probably made almost no difference at all, but the roller tip made the engine rev MUCH more freely and quickly.

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#2049105 - 05/18/10 12:25 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: 73vwTodd]
logston18 Offline
n00b

Registered: 05/12/09
Posts: 39
Loc: Lynden, WA

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#2049152 - 05/18/10 01:46 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: logston18]
Superhobo Offline
Over the Hill

Registered: 12/05/09
Posts: 3017
Loc: Kansas City
MMR and Trick Flow make them. I have the Trick Flow ones waiting to go in with the cams next week \:\)
_________________________
2000 P71. -PI intake, BBK 78mm throttle intake, 80mm MAF, Granatelli COPs, Autolite plugs, Ford 30# injectors, MMR fuel rails, Ford GT cam followers, K&N filter, UD pulleys, Stewart WP, Comp XE262H cams, Trick Flow cam spacers, Stainless Works long tubes w/catted lead pipes, 2.5" cat-back w/MagnaFlow x-pipe & Jones Full Boar mufflers, Heinous CAs, Metco Watts-Link, Energy Suspension bushings & end links, 4:10/Trac-lok w/carbon fiber clutches, Setina rear window barriers, Taxi Depot front bumper guard, Sony head unit, Pioneer speakers, tuned w/Sniper.

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#2049179 - 05/18/10 03:04 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Superhobo]
Quickvic30 Offline
Just watchin
Grand Poobah

Registered: 02/24/05
Posts: 10922
Loc: Minneapolis, MN
Anyone have a pic of these?
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#2049192 - 05/18/10 05:06 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Quickvic30]
Superhobo Offline
Over the Hill

Registered: 12/05/09
Posts: 3017
Loc: Kansas City
 Originally Posted By: Quickvic30
Anyone have a pic of these?


the Trick Flow ones-



MMR-

_________________________
2000 P71. -PI intake, BBK 78mm throttle intake, 80mm MAF, Granatelli COPs, Autolite plugs, Ford 30# injectors, MMR fuel rails, Ford GT cam followers, K&N filter, UD pulleys, Stewart WP, Comp XE262H cams, Trick Flow cam spacers, Stainless Works long tubes w/catted lead pipes, 2.5" cat-back w/MagnaFlow x-pipe & Jones Full Boar mufflers, Heinous CAs, Metco Watts-Link, Energy Suspension bushings & end links, 4:10/Trac-lok w/carbon fiber clutches, Setina rear window barriers, Taxi Depot front bumper guard, Sony head unit, Pioneer speakers, tuned w/Sniper.

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#2049210 - 05/18/10 08:01 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Superhobo]
GSDNH Offline
Banned
Over the Hill

Registered: 05/14/07
Posts: 2724
Loc: MA
These have been around for a while.
Not sure how well they work. Those stock spacers aren't that heavy IMHO and they are a little pricey for what they are.

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#2049304 - 05/18/10 10:58 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Quickvic30]
AODE Offline
Over the Hill

Registered: 07/27/02
Posts: 2551
Loc: Ohio
those are at(red), they work wuite well apparently.



Makes me wonder, what this 4.6 could really do, if ford lightened the cams
_________________________
2000 CV
5.4 LIGHTNING SWAP +4 psi pulley
350 HP
450 Lbs Torque

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#2049308 - 05/18/10 11:05 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: AODE]
Spartan Offline
Over the Hill

Registered: 09/26/07
Posts: 1343
Loc: Bozeman, MT
 Originally Posted By: AODE
those are at(red), they work wuite well apparently.



Makes me wonder, what this 4.6 could really do, if ford lightened the cams


The cams are pretty light compared to aftermarket cams. Have you felt how heavy a set of aftermarkets are? They are brutes.
_________________________
1998 P71 - Aluminum 4.6, 5 speed - 245rwhp 293rwtq
1992 F250
1993 Ford Ranger




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#2049331 - 05/18/10 11:57 AM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Spartan]
73vwTodd Offline
Over the Hill

Registered: 02/08/10
Posts: 3913
Loc: Florida
So what exactly do these do then? Do they just attach to the end of the cam? Do they go between the gear and side of the cyl head or something???

I really don't see how these can make more power other than simply lightening the rotating mass... but honestly, lightening the rotating mass of the cams probably don't make anywhere near the difference it would lightening the rotating mass of the crank.

Looking at this picture below, you can see that the rocker arms on the 4.6 don't appear to be roller tipped. Obviously the fulcrum and the mounting point to the cam lobe is, but apparently they aren't on the top of the valve stem. I bet you'd see some improvement by swapping these out. I've never worked on a 4.6 before, but I'm thinking I may go pick up a 5.4 somewhere and start working on it and adding all this cool stuff to it.

EDIT: also looking at this picture, I now understand why so many people have worn out timing chain guides! That's crazy. I assume they get heavily lubricated, but I can only imagine the amount of wear these guides must take. Even with the best synthetic fluid and calm highway driving... I bet these wear out regardless....


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#2049390 - 05/18/10 01:30 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: 73vwTodd]
RoyalVic8 Offline
Banned
Over the Hill

Registered: 11/10/08
Posts: 3209
Loc: Lexington, SC
nvm


Edited by RoyalVic8 (05/18/10 01:41 PM)
Edit Reason: not awake yet, haven't had my coffee
_________________________
98, P73, 13x,xxx, $20 Rustoleum Paint Job, 18" Cherry Bombs, '10 18" Mustang GT Rims w/Nero tires - already a bad ass but still a work in progress.




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#2049414 - 05/18/10 02:08 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: RoyalVic8]
Super_Buffalo Offline
Climber

Registered: 03/04/10
Posts: 687
Loc: Southbridge, MA
73...cam spacers are NOT cam followers. Roller cam followers will give you a bit more on the top end (ie hp) but what he is talking about are the actual spacers between the cam gear and the camshaft. That in itself, imho, won't give you that much of an increase as say, lightening, re-balancing, and knife edging the crankshaft would. When I build my 4V that's what I plan on doing to the crank. The cams don't offer that same sort of adjust-ability. Cams are cams. That's it. Unless they are made out of titanium or some other lightweight alloy, there's no way you can really lighten them without sacrificing integrity.
_________________________


2004 CVPI, Dark Blue Pearl, Tucked rear fascia, Osram Sylvania Silverstar 9007's, Rizzo's blinker mod, Gatorback belt, 180 degree thermostat, and more to come...

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#2049528 - 05/18/10 04:45 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: Super_Buffalo]
73vwTodd Offline
Over the Hill

Registered: 02/08/10
Posts: 3913
Loc: Florida
 Originally Posted By: Super_Buffalo
73...cam spacers are NOT cam followers. Roller cam followers will give you a bit more on the top end (ie hp) but what he is talking about are the actual spacers between the cam gear and the camshaft. That in itself, imho, won't give you that much of an increase as say, lightening, re-balancing, and knife edging the crankshaft would. When I build my 4V that's what I plan on doing to the crank. The cams don't offer that same sort of adjust-ability. Cams are cams. That's it. Unless they are made out of titanium or some other lightweight alloy, there's no way you can really lighten them without sacrificing integrity.



Yeah, I realized that after one of the other posts, but yeah, I agree with you. I just don't see how lightening it will really much that much of a difference. It's not like the old ones are made of uneven lead. However, every little bit helps I suppose.

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#2049538 - 05/18/10 04:58 PM Re: More HP, +Revs MMR 2 /4 Valve Camshaft Spacers [Re: 73vwTodd]
99_03PantherS Offline
Poobah

Registered: 03/23/03
Posts: 9577
Loc: NW side Chicago
so do they add power?
_________________________
Jason G.
'06 Towncar Designer
'81 Mark VI 2 door
'88 Towncar Cartier
'07 P71 SAP- steedas, jmod, 410s, Mo's tune, numerous interior exterior mods.
'16 F-450 V10 DRW
'08 F-450 Powerstroke DRW: DPF,EGR delete, AFE intake Spartan powered.
RIP 94 P71, 97 P71, 99 M74, 03 M74

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