I ran a hose from the DS PCV to a brass fitting I bought and stuck in the NPT thread under the intake. Pics in other thread
Cobra Jet Intake manifold CAI Set up interest??
- Thread starter Bloodykisses
- Start date
I ran a hose from the DS PCV to a brass fitting I bought and stuck in the NPT thread under the intake. Pics in other thread
Shaun are there any issues with this breather setup?
5 DOT 0, Could you install a CPC battery cover over the peterson oil breather? it looks like you could mount the bracket a little to the right to clear the battery cover but idk. I just bought a set from YellowBoss today
FordRacingParts123 has it listed for around 700.
http://fordracingparts123.com/engin...-9424-m50cj/?gclid=CMbjh6H7p7gCFYdQ7Aod2TEAjQ
http://fordracingparts123.com/engin...-9424-m50cj/?gclid=CMbjh6H7p7gCFYdQ7Aod2TEAjQ
What mods are done to that car? Those numbers hint more than boltons and CJ IM. I'm wondering if the other supporting mods are increasing the HP and TQ gains with the swap. Wish there was a comparison on a basic bolt on car and the swap.
I believe it has upgraded cams, mildly ported heads. Boss valve springs, and of course long tubes with off road pipes. Not sure on the fuel type. I read a thread a while back that posted the mods to this car but can't remember where. I read up on it because this car was hitting high 10's at the track.
What was the setup of this car and the final numbers?
Stock gt heads and cams, made 482 rwhp. Check out my thread on the gt forum
The 2010 gt JLT was a 10hp restriction compared to true 4.5 inch. Still made god power though
Can anyone else confirm this, I would've though most of the gains come from the manifold/intake, but coming from Shaun.. I know they guy is hardly wrong with this stuff. I guess I'll have to wait and see Greyhatches comparison or when I do my build, I'm going for e85 boltons, no heads or cams (yet). But if I do this build with the gt500 tb and yield less than 10whp/10tq I'd be real pissed.
No one has commented on torque numbers which is what matters for acceleration. And I think its because you don't see any torque gains from this setup, so I'll be passing on it.
Do not do the GT500 TB. It's a bottleneck and worse than the boss setup. Bite down and do the SCJ with a 4.5" CAI. It will be 460 rwhp+ on 91 all day long on GT heads/cams. On a boss it should be 470+ See below:
While researching and engineering the correct CAI diameter, I went through the following calculations to see where the true bottleneck is and what’s really required based upon it. Obviously airflow through a pipe is dependent upon the surface area of that pipe, so I decided to do a comparison of various throttle bodies – actual surface area of airflow. What I found was pretty astonishing; the SCJ TB is in a league of its own for serious flow area. The 4.5 inch seems to be the best combination of flow, drivability and nicest transition to the 5 inch OD on the TB without restriction. 5 inch is overkill based on the TB constraint. The 4 inch and 4.25 inch should theoretically make the same power as the 4.5 inch, but it’s more of a step down at the TB. I can clearly see now why the 4.5 inch made 10 more hp than my JLT. I’d also like to bet that the CJ dual 65 with any CAI being at 9 square inches is 10-15 hp less than the SCJ and 4.5 inch CAI. I’m glad I went with the SCJ.
Throttle body intake side surface areas:
GT500 Dual 60mm = 8.77 sq in minus throttle plate rail area (1.18 sq in) = 7.59 sq in
Dual 63.5mm = 9.82 sq in minus throttle plate rail area (1.25 sq in) = 8.57 sq in
For reference: Single 90mm = 9.86 sq in minus throttle plate rail area (0.88 sq in) = 8.98 sq in
CJ Dual 65mm = 10.29 sq in minus throttle plate rail area (1.27 sq in) = 9.02 sq in
SCJ Mono-Blade TB = 13.78 sq in minus throttle plate rail area (1.45 sq in) = 12.33 sq in
CAI round pipe surface areas:
5 inch = 19.63 sq in
4.5 inch = 15.90 sq in
4.25 inch = 14.19 sq in
4 inch = 12.56 sq in
2010 JLT at tightest spot = 10.01 sq in
446 rwtq. Show me another N/A coyote or boss variant with this kind of torque. You are pretty quick to discredit folks who have actually put it to good use. Torque is not everything, gearing into the proper powerband is everything. Good luck with your setup; you're leaving a lot on the table N/A.
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I read that it's not recommended to use nitrous with the CJ manifold? Any truth to this?
Damn well that's some bad news for me, being that I have mine sitting in my room. Also, my tuner has issues running the scj mono blade so he refuses to tune them after encountering drivability issues trying to work on other cars with it. I thought th gt500 would flow on par with a 90mm single, doesn't appear so..
Are you still planning on the dyno comparisons between all these tb/intake setups with the cj, to see the different numbers between them?
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The person dynoing various TB setups is someone else. These are just calculations and measurements comparing surface area of airflow. I would suggest another tuner, becasue mine was perfect.
oke:
This is worth watching.
I ended up finding a good deal in the 65mm frpp and ended up buying that, so next best thing to the mono blade and I won't have any tuning issues and should see some solid gains. Ken bjones from Lund does my tuning, I don't know exactly why they've been having issues tuning the mono blade.
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