my little project...

[mikepotts]

is coming together...
http://www.cardomain.com/ride/3195956

 

[mikepotts]

i figured i will have it to drive while i take my time building another short block. wiseco forged low compression, manley 5.7 rods, stock stroke, balanced. when it is done i will be porting the head and intake, swaping an HR276 cam, T3/T4, turbo header. all in an effort to make a potent blow thru turbo ranger. or i might end up with EFI on it... still up in the air.

 

[pwrranger88]

how do you like your current set up i have the same truck and have been thinking about doing the same thing

 

[Mark_88]

Looks good...is that the original exhaust manifold or did you get the shorty header?

 

[mikepotts]

actually i havent gotten to finish it up yet... waiting on more money for new lash caps, and new lifters.

its the stock manifold for now.

 

[Kenneth S]

The carb adapted to the lower efi intake runs like crap when it's cold (it doesn't heat the intake to well on cold mornings or starts), and the throttle response isn't good until you get around 3000 rpm's (it's like putting a tunnel ram on a V8, the long intake runners kills alot of bottom end torque), on my truck I went from the adapter setup to a OMC boat intake manifold, it has very short intake runners, and heats the intake up real quick, I only have to use the choke for a little over a minute, and overall drivability is vastly improved form the adapted efi setup.
My truck with the OMC boat intake manifold,

The underside of the OMC boat intake.

The OMC boat intake with an adapter for a Holley 2 bbl.

 

[mikepotts]

well, this is kind of a first step, i will ultimately be turboing the truck.

 

[Kenneth S]

Your truck kinda started like mine did, but I just wasn't happy with the carb/efi manifold setup because of the way it ran, it was very cold natured. I have been considering building a new 2.3 for my truck turbo charing it, and running it on propane (and or natural gas) instead of going through all the trouble of putting an efi setup on it.

 

[mikepotts]

propane is nice, the BII you see in my avitar is propane injected. it has a high octane content enabling boosted applications with elevated compression. i havent decided where i am going with this (my ranger) yet, i am thinking about either...
1---adding a t-bird manifold and turbo keeping the carb as a blowthru or,
2---same manifold and turbo, plus the EFI intake and the harness here...

http://cgi.ebay.com/ebaymotors/Ford...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories


its a little pricey but i likey!

 

[mikepotts]

another option... ive been doing some more research on propane, as it turns out the impco 425 mixer on my bronco is boost ready! all that is needed is to add a boost pressure reference line from the mixer to the regulator to add fuel under boost! use a MSD dizzy and an MSD BTM to control the timing, and i should have it covered...

i could use a stock TC manifold and turbo and merely blow thru the mixer! simple, simple, simple!

 

[shadetree]

, the long intake runners kills alot of bottom end torque),

Long intake runners should aid low end torque. That is why they come on engines from the factory. Short runners are for high rpm operation. You had some other problem killing your low end, possibly runner sizing. If too large, they will kill velocity just like exhaust. shady

 

[Kenneth S]

The long runners aid low end torque when your injecting the fuel right before the cylinder head, but when the engine has only it's vacuum draw the fuel from a carburator low end torque, and drivability suffer because the engines vacuum signal is weak at the carb at lower rpms because of the intake runner volume, which is why a tunnel ram carb setup only works good at higher rpms.

 

[shadetree]

Not if the runners are sized properly. Vacuum signal has nothing to do with it. It is the velocity of the incoming air that makes the difference. It's called "ram air."

During cam duration, the flow thru the combustion chamber is extremely high. When the exhaust valve closes, the incoming charge "rams" into the combustion chamber. It is a "mini supercharging effect." Like when water hits a dam. The longer runners give the charge more time to build velocity, and the greater the ram. Ever see a Chrysler 413 cross flow ram? Carbs were way over by the fenders. Extremely long intake runners.shady