Starting my 4.6 2v supercharged rebuild - TCCoA Forums

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post #1 of 15 (permalink) Old 02-07-2017, 05:15 PM Thread Starter
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Starting my 4.6 2v supercharged rebuild

Hello everyone! Looking for main and rod bearing suggestions and head gasket suggestions. Already have good forged internals Cobra crank and a good set of heads. My first 4.6 I've rebuilt and want it to last! What's everyone using? Was thinking of using a teksid block as well. Thanks in advance
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post #2 of 15 (permalink) Old 02-07-2017, 05:42 PM
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Fel-pro MLS gaskets are a good bet when it comes to head gaskets.
For my engine build I am using sealed power main bearings and clevite rod bearings. Teksids are great (its what I am building, but its staying DOHC), and you can get them cheap from a mark. And from my understanding they, matched with PI heads, will increase compression more than PI heads to an NPI iron block. Good for a nitrous build

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post #3 of 15 (permalink) Old 02-08-2017, 05:57 PM
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Which type of supercharger are you going with?
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post #4 of 15 (permalink) Old 02-10-2017, 11:12 PM Thread Starter
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It has a vortech on it.
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post #5 of 15 (permalink) Old 02-11-2017, 07:34 AM
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Originally Posted by Wile E. Coyote Jr. View Post
Fel-pro MLS gaskets are a good bet when it comes to head gaskets.
For my engine build I am using sealed power main bearings and clevite rod bearings. Teksids are great (its what I am building, but its staying DOHC), and you can get them cheap from a mark. And from my understanding they, matched with PI heads, will increase compression more than PI heads to an NPI iron block. Good for a nitrous build
Yes, NPI had less dish tan PI pistons, and 4V had even less dish than NPI. I think PI heads on a 4V shortblock gets you in the ballpark of 11.3:1 compression. You don't want to do that with a Supercharger though unless you're running very high octane or E-85, and you still wouldn't want much boost due to the higher compression. PTV clearance is an issue on PI swapped 4V shortblocks, and you will need to notch the pistons for the valves. Trickflow heads may resolve that due to how their valves are positioned, but I'm not 100% sure about that.

For a supercharged motor, I'd go lower compression personally. Since the blower compresses the fuel/air mixture already, you don't need high static compression to make more power.

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post #6 of 15 (permalink) Old 02-11-2017, 12:49 PM
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Yes, NPI had less dish tan PI pistons, and 4V had even less dish than NPI. I think PI heads on a 4V shortblock gets you in the ballpark of 11.3:1 compression. You don't want to do that with a Supercharger though unless you're running very high octane or E-85, and you still wouldn't want much boost due to the higher compression. PTV clearance is an issue on PI swapped 4V shortblocks, and you will need to notch the pistons for the valves. Trickflow heads may resolve that due to how their valves are positioned, but I'm not 100% sure about that.

For a supercharged motor, I'd go lower compression personally. Since the blower compresses the fuel/air mixture already, you don't need high static compression to make more power.
I know lower compression is better/safer for FI, I was saying that PI heads on a teksid would be good for a nitrous build. I didnt know that you would to notch the pistons but it makes sense.
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post #7 of 15 (permalink) Old 02-14-2017, 08:41 PM Thread Starter
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Thanks for the input. I'm running SVO heads Cobra crank Manley rods vernolia Pistons. Was just planning on using the teskid block with these inners I have out of the original block that has super low miles on it. I'm looking for recommendations on main and rod bearings piston rings and head gaskets. it's my first 4.6 rebuild and I want to do it right and use the good stuff
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post #8 of 15 (permalink) Old 02-14-2017, 09:23 PM
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Originally Posted by sceholmes97 View Post
Thanks for the input. I'm running SVO heads Cobra crank Manley rods vernolia Pistons. Was just planning on using the teskid block with these inners I have out of the original block that has super low miles on it. I'm looking for recommendations on main and rod bearings piston rings and head gaskets. it's my first 4.6 rebuild and I want to do it right and use the good stuff
No kidding. Svo heads are hard to come by from what I have heard, and expensive. What intake are you running? Whats the power goal?

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post #9 of 15 (permalink) Old 02-15-2017, 04:21 PM Thread Starter
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SVO intake as well which is pretty much a bullet intake from my understandings. I bought the car off a member a few years back. I can't remember what it dynoed paper work is in a box since I moved recently. It was close to 6 I wanna say
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post #10 of 15 (permalink) Old 02-15-2017, 04:24 PM Thread Starter
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Hoping you guys can help recommend bearings which piston rings do you use head gasket excetera so this thing will last LOL
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post #11 of 15 (permalink) Old 02-15-2017, 05:06 PM
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Hoping you guys can help recommend bearings which piston rings do you use head gasket excetera so this thing will last LOL
Does Venolia makes rings to go with the pistons you have? If not I would go with this set: TOTAL SEAL AP STEEL Piston Ring set for Ford Modular Engine 4.6 [400296] - $269.99 : Modular Motorsports, Home of the Worlds Fastest Modular Engines

With everything you said this engine already has you should be safe all the way up to 1,000-1,100. Are you gonna run e85?

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post #12 of 15 (permalink) Old 02-16-2017, 01:50 PM Thread Starter
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Thank you sir! I'm not sure if they do or not. I'm guessing this car was built in 2002 or so super low miles on car and engine build. I've heard good about these rings and am pretty sure I used them on a 306 build for a friend's Fox body. I've been thinking of E85 but haven't don't much research on as to what I'd have to change over to make it E85. I'm not to familiar with it I have friends that have went that route. I'm not opposed to doing it especially for the power gains! I really appreciate your input
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post #13 of 15 (permalink) Old 02-16-2017, 03:57 PM
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I've been thinking of E85 but haven't don't much research on as to what I'd have to change over to make it E85.
From my understanding youll need to change basically your entire fuel system, from the pump to the lines to the injectors. And once you switch over you will have atrocious fuel economy. On the plus side, its much safer for the engine and it makes alot more power (I have HEARD of even 100 hp gains just from the switch, but dont quote me because I myself havent experimented with the stuff... yet).

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post #14 of 15 (permalink) Old 02-16-2017, 08:47 PM
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Originally Posted by sceholmes97 View Post
Thank you sir! I'm not sure if they do or not. I'm guessing this car was built in 2002 or so super low miles on car and engine build. I've heard good about these rings and am pretty sure I used them on a 306 build for a friend's Fox body. I've been thinking of E85 but haven't don't much research on as to what I'd have to change over to make it E85. I'm not to familiar with it I have friends that have went that route. I'm not opposed to doing it especially for the power gains! I really appreciate your input
You wouldn't need to change the lines. The only things you'd need to change to switch to E85 would be the fuel pump, the fuel pressure regulator and the injectors. You'll also need to re-tune the car to run on E85.

I've got a dual tune set up on mine where I can switch between E10 (93 octane Premium pump gas) and E85.

Gas mileage won't drop that dramatically. You'll see may be 20% less MPG than with gas. Considering that pump gas is E10 and can be as high as E15 anyway you won't see a huge decrease in mileage.

Also keep in mind that per ASTM Specification D 5798, E85 can be as low as E70 and still be called E85.

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post #15 of 15 (permalink) Old 04-10-2017, 02:36 PM
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I've had good luck with Cometic MLS head gaskets.

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