How to Pi swap 4.6 mustang see the deafferents
Вставка
- Опубліковано 30 тра 2019
- We are in the middle of swapping the stock heads and intake on this 97 Mustang GT with a 4.6 here you can see the difference in size for the intake and heads from the stock heads to the PI swap heads and intake.
- Авто та транспорт
Another thing to note is that the 'doorman brand' pi intake manifold for these engines have the big pi ports but the runners are short like the non-pi Ford factory intake manifold. -Always buy or source a Ford Racing PI intake manifold or their factory pi manifold, the doorman brand will sap your hp and your car will fall on its face around 4500rpm at wot. My P7B came with a doorman and the swap to the Ford Racing one was night and day difference lol
That other intake is the doorman intake.
Dorman 😅
There is another reason fornthe increase in power and that is compression. The non pi motor has 52cc combustion chamber and 11cc dish pistions about 9.8:1. Pi heads have 42cc combustion and 17cc dish. Putting them on a non pi motor gives you 10.7:1.
That is the main reason for the power increase.
@@19jody72 your right the increased air flow, cooler air charge and fuel atomization due to longer runners on the lower intake and the increase cam size all have very little to do with the power increase
@@ottobauner9828 it's everything..but the bump in compression is the main thing.
@@19jody72 with just compression alone the increase would be minimal. An engine is nothing more then an air pump. Most of the power increase come from the increase in air flow due to the heads intake and the increase in lift from the PI cans
@@ottobauner9828 Fair enough. The Pi conversion alone with non pi cams is 60 hp
Me: watching him explain how many fingers fit into cylinder head ports...
My brain:That's what she said🤣🤣🤣
LOL
My thoughts as well haha
@@dadyo63 ah, welcome to the club😁
I was saving money to do modifications on my 04 mustang GT automatic dark shadow gray I put chrome wheels on it cold air intake and a pi intake manifold and stop right there. Then I want more hp and after seeing what I would have to spend I decided to go and buy a 14 mustang GT 5.0000000yea sterling gray 6 speed and now I enjoy both cars capability for what they are have to offer the 5.0 is a beast the difference between a pony car and a stallion love them both just the way they are both with chrome deep dish wheels and Mickey ttttttttompsons
Nice
Thank you for the informative Video.
You're welcome.
how much horsepower gain from this
we didn't get a chance to find out, the engine had a lot of miles and spun a rod bearing a month later. But i would say over 50 hp.
A non pi motor with ported pi heads and pi intake with comp cams xtreme 272 cams you can expect to see right at 400 hp/400ftlbs of torque
After having it tuned yeah pi swaps pick up a good bit but man . Not sure spending this kinda money is worth it . AS non pi with cams and port work are better. Spending big money like this I would have done more research
You're right it's a good upgrade from stock but is it really worth the money. Aftermarket heads what a been worth it.
@@SpeedForceGarage hey man. Im doing an engine swap, putting a 4.6 PI into a 2014 Mustang. Any ideas on motor mounts that'll work?
Cam timing and compression is better on the pi stuff also I believe ?!
Yes your right.
When he’s comparing the hole sizes, it reminds me of my ex😏 before and after…
lol
How can you tell the difference from a 1st gen 4.6 and a pi 4.6 without taking the engine apart?
If you look at the valley of the intake you can see if it goes close to the valley of the block. Then that is a pi set up.
Any 4.6 made before 99 is a non pi motor. In 99 they put the pi motor in the mustang. All other vehicles still had no pi motors until 2001 when the started putting the. In the f series, e series, and panther chasis
hehe i can’t stick as deep this a cool video perfect and simple explanations 🔥
Glad you liked it!
I can shove 3 fingers in a pi and a non pi can barely take 2 . Get your fingers outta there
Lol have to show how lose she is.
Hey man I have a question for you!! I just diagnosed my crown Victoria misfire! Cylinder 4 on this 2v 4.6 my cam follower fell off ! Why would this happen ? I was able to reinstall it with a flathead screwdriver,no problem. I then checked compression on this cylinder and while the other cylinders tested at190-200psi and held there well. This cylinder (4)only got to 90 psi. A wet test brought it up to 190psi. A friend says”yep,bad rings needs a rebuild”. I dont believe it. The car has 40k miles on it. Should I be lookin for something else ? I’m a bit of a novice with auto repairs. With the cylinder on the compression stroke(not top dead center) I shot air into the spark plug well and can feel it freely leaking out of the intake port(I have the intake removed-another issue). Am I missing something ? Should the head be removed? This is my daily driver and only vehicle and I need it running by the time this quarantine crap is over. I also had a coolant leaking internally in the intake manifold. It’s possible it was pulling coolant into this cylinder ,even tho cylinder8 was right next to the leaking culprit
Could be ring lands or a seating issue but it does kind of sound piston ring related. I'd have it diagnosed by a legit mechanic and see what they say. 40k miles isn't even at break in with those motors so idk what to tell you other than things do happen sometimes that are hard to explain
Bad lifter will cause that issue. Make the cam follower jump out and little to no compression. The oil port could be blocked to the lifter, if so they'll collapse and you should be able to hear it ticking if it's not pumping up all the way.
Thanks boys. I replaced the lifter and put everything back together. Even though that one cylinder had poor compression it all seems to be running ok. The engine is super smooth and seems to be pulling smoothly. Thanks for your responses !
I also plan on retesting compression after I drive it for a while
I would go with garry R. answer I've had an avalanche with no compression in cylinder 7 I took valve cover and saw the lifter stuck open... thus I do believe you have a bad valve related issue check cam shaft for tare or damage at the cylinder you found low compression also check for collapsed spring here is another test at tdc on the suspected cylinder pull spark plugs and the ones next to it then shoot air if it comes out the next cylinder means it's you head gasket
Can any one help me ? I have a 2001 4.6 mustang gt with a bad engine . Would a 1997 mustang 4.6 engine fit in my 2001 gt with no problem ?
It'll work fine but you need to use the 2001 intake for the coil on plug stuff. I put a 1997 4.6 in my 01 f150 and put the 2001 Intake on it and it runs great no problems
we've done that with a 1998 engine. We use the heads and intake.
Long runner dosen't make hp it makes torque and you make the most power with the jump in compression with a pi swap
yes longer runners do help make torque, it also helps with hp as well, not as much as the torque though. The larger runners also helps with hp in the higher rpms. yes the higher compression dose make more power throughout the rpm, which helps with the lower rpms and having larger runners.
i heard that set up is 10.3:1
I know it bumps up the compression on the 98 bc the piston are a little taller.
If u can find good used pi setup on the cheap it wood be worth doin, but buying new setup from ford doesn't seem worth it.
believe me, trick flow heads are alot more money. But well worth it bc you cant get anything else.
Whered you get pi heads and intake?
These heads are ford racing heads that have been discontinue. Some times we get used ones from Facebook.
port them an put custom cams in it should make 340 easy
400
"I can't stick as deep" that's what she said!!
lol
i swapped my 1998 mustang gt.. with pi intake manifold.. and noticed a huge difference. the temperature gauge always stays low... meaning its getting tons of air.. all i did was do pi intake manifold swap, not the pi heads
like you showed in your video.. the difference in size on stock manifolds compared to pi is almost double.. you have to buy other parts to convert it though
Agreed. My 03 GT always stay below the midpoint of the temp gauge. Nice cruiser.
So you didn't change the heads to PI along with the manifold swap? How did you get the manifold to match up with the Mustang heads, spacer-adapters? Was there a big power difference over the stock manifold?
I wonder why Ford didn't put the PI engine in the Mustang without any changes? Hood clearance from the hi-rise manifold, perhaps.
My lincoln has a 4.6 v8 leaking antifreeze where the engine connects to the transmission should I get another engine?
Freeze plugs.
Freeze plugs
Do you have an after video of it running and tuned?
yes we do, here is the video. ua-cam.com/video/0BRCxu0i06I/v-deo.html
@@SpeedForceGarage big difference in the power and tq? Or at least feel like it?
We can feel the power difference for sure. The customer sold the car after doing the swap. So we never was able to dyno the car to find out.
is there a way to tell the difference by just looking under the hood or do you have to take it apart to figure it out?
If you look in the valley of the intake, you can see short or long runners. I'll try to make a new video showing what i'm talking about.
@@SpeedForceGarage i think i know what you mean
How much does it cost in labour for this swap?
If the engine is still in the car. Then its just like as a head gaskets job. So around 1500 plus parts.
@@SpeedForceGarage thanks 👌
My non pi blew, just went ahead an did the full engine swap. It a fun build but like always you want more.
@@mustangaddict589 id like to ask you questions about the sn95 platform if your familiar with it. I bought my first muscle car in May and its a 98 SN GT
Mike Hunt wassup ?
There’s any difference in the exhaust manifolds among the pi & npi ?
Yes, the pi exhaust manifolds are larger as well.
@@SpeedForceGarage vhperformance could you tell me where exactly is the difference? Visually a don’t see any difference
Would you need a tune after a pi swap
You can get away with it a little but will run lean. It will need tunning
i havent done a tune and its running lean on my intake swap manifold.
YOU BETTER GET A TUNE ON IT...AND OR PULL THE OCTANE PLUG OUT ON THE RIGHT FENDER TO BACK OFF 3 DEGREES OF TIMING AND PUT 93 OCTANE....
We tune it a few days later. it was pretty close.
Does it need a tune ?
Yes it will need a tune.
Where did u get your pi heads from
Those PI hands were from Ford racing
Can I put npi intake on pi heads?
@@xoxmisspaigexox I wouldn't do it.