Does anyone know of any know of any manufactures that produce a stronger than factory rocker arm for a 99 with the 2.5l? Thanks

Are you looking for stronger or actually cam followers that have a larger lift? The ratio of lift is decided by the length of the arms from pivot to cam contact, which is slightly variable. If you move the contact point closer to the pivot, the end of the arm(a lever) will move farther for a given cam lobe height. Move the contact closer to the valve, and the valve lift will be reduced.
If you really want 'stronger', the only aftermarket sources I have heard of are Racer Walsh(no relation), and Esslinger.
tom

Heads - All 2.0/2.3/2.5 heads will physically bolt in place of each other, they all have similar exhaust port shape and placement. All cams are interchangeable as long as they
are used with the proper followers. Later model ('95 and newer) roller cam
followers cannot be easily swapped onto an older head as the valve stem size was
reduced in the newer heads and matching slot in the follower was reduced.

Early 2.0 and 2.3 heads have the same small round intake ports spaced evenly apart, they differ from each other in their valve sizes though. There are several variations on the 2.3 heads though they break down into 4 distinct types:

1. Passenger car oval port heads-’74-’80 Mustang, Pinto, Fairmont, Bobcat, etc.
2. Passenger car D-port head-’81-’95? T-bird, Mustang, Etc.
3. Truck round port- ’83-’85 Ranger
4. Truck D-port- ’89-’01 Ranger. The '89-'94's and '95-'01's have different combustion chambers and ports. "stolen from "therangerstation.com"

The valve stem diameter is different in the later models. 89 to 94 valve stems are the same, 95 to 01 are smaller. Need the followers (roller rockers) from a 89 to 94 in rangers or 91 to 93 mustang.

I didnt find much on the 4 Banger, I am more familiar with 4.0 OHV and the 3.0L as far as platforms. Tom Morano Racing products in Outtawa CA (Canada) may have some solutions for you. You could contact them here:

As for 3.0L/4.0L you would be looking at something more along the lines of;




http://moranav6racing.com/category.html?CategoryID=36
1.8:1 Roller Rockers
Application: 3.0L Rangers, Mazda, Tempo, Taurus, Sable, Windstar, Aerostar.

**NEW!!!**

This bolt-on is favored by many, as an alternative to a camshaft, as you get .060" more lift at the valve, avoiding the expense and time of swapping your camshaft. Also, there are no issues fitting un der your stock hood!

Up to 18hp. gains

**NOW AVAILABLE!**
1.8:1 bolt-on adjustable roller rockers ($525.)
&
1.8:1 adjustable 3/8" screw-in studs. No guide plates required.($450.) Also available in these ratios; 1.7:1 1.6:1 and 1.5:1



http://moranav6racing.com/category.html?CategoryID=32

1.8:1 Roller Rocker Kit
Application: 4.0 L V6 FORD ohv engines

This NEW Morana exclusive is now available! Finally....roller rockers for the 4L enthusiasts!

Our roller rockers are available in bolt-on/adjustable, or for ultimate racing...with screw in studs & guide plates(coming soon). Notice these 2 pictures of the stock 1.5:1 rockers, compared to the Morana exclusive 1.8:1 roller rockers. First individual non shaft roller rockers ever! (pp)

*NOTE* If you intend on upgrading your camshaft..make sure that cut the valve guide at least 100 thou more than stock height, to prevent your retainer from hitting the valve seal.

*ALSO* Make sure that you have upgraded your springs to prevent coil binding.

**MUST MODIFY**
(1) Your lower intake gasket needs to be cut on the line where the pushrods go by, in order for them to clear.
(2) Your intake manifold needs to be ground (by the intake runners) for the pushrods to clear.

This kit includes- 12 roller rockers, pedestal &, bolts, 2 rocker mounting bars with hardware, 12 hardened Morana pushrods, 12 special Morana lifters.

**Also available 1.5:1 1.6:1 1.7:1 roller rockers
$880.US

*NOTE* 1.5 & 1.6 ratios don't require cutting of the intake gasket or intake manifold.

PRICE: $880.00

I hope this helped open some direction for you..

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