Are you installing the cap backwards? All the bolt hole threads were chased?

JMC

 

moly rings are for N/a motors the moly coating burns off with the high temps of nitrous and F/I motors. FYI its something i learned the rings you want are total seal. i paid 180 for a set of rings

 

half a gram damn that is a very high tolerance

 

4v iron or aluminum? 4v iron block from the 03/04 cobras were 4 bolt the aluminums were 6 bolt

 

no im not putting it on backwards and all the threads were chased but it was the actual main cap that the stud wouldnt fit through.

For some reason there was a lip about halfway down the hole the stud goes through on the cap. all the other holes were fine though.

its fixed now so it doesnt matter i just thought it was weird.

 

I have never heard of that before, what kind of rings are the total seal then?

the manley file fit ones i bought were 125, and the paper they came with had all the gaps listed for forced induction, nitrous, alcohol, N/A etc.

And about the .5 grams that is what the machinist wanted to do. He does good work and knows what he is doing.

He built my friends 2.0L accura motor and it makes 700 horsepower, and he drives it everyday. I hate imports but that much power out of a 2.0L is nuts.

 

Yea I agree. That is some horsepower for a 4 cylinder. I am helping a friend build a 2.0 for his eclipse. Not a fan of imports either but I like working on cars so I figure it won't hurt to learn about them either. I need to find a good machinist out here that wouldn't mind doing that with my rotating assembly. Glad you got the main cap figured out.

 

anyone have any suggestions on getting the crank double keyed. The most boost this motor will probably ever see is fifteen pounds or so. I have heard of them ripping out before but i think thats only in extremely high horse engines.

The machine shop is closed right now so i cant talk to him today to see what he thinks, but I am taking the motor there on friday to be balanced

 

Well he finally got smart and parted it out to buy a pro street 71 nova not to long ago. lol

 

so i'm getting my trick flow heads pretty soon and i want your guys opinion.

there are the normal trick flow heads that are $2000

and then there is a ported version

CNC Port 4.6/5.4 to Stage 4, Hot Tank and Disassembly, Remove and Reinstall Seats, Blend Valve Job, 7* Pair of Valve Locks, Ductile Iron Valve Seats, Competition Multi-Angle Valve Job, Mill heads to Customer Specs, Flow Intake and Exhaust Ports, Heads Cleaned, Set Spring Pressure, Installed Height, and Coil Bind, Manley SS 1.450 36.8mm Exhaust Valves ; Manley NexTex Springs and Steel Retainers 1.94 Custom Intake Valve, New Bronze intake and exhaust guides New Ford Viton Seals
$3000





Normal Trick flow #'s
Lift. Int. Exh.
0.100 61.3. 54.0
0.200 130.3 107.5
0.300 182.5 154.9
0.400 225.8 188.8
0.500 249.2 205.0
0.550 258.6 208.6
0.600 265.7 211.7

Ported Trick flow numbers
Lift. Int. Exh.
0.100" 64.4. 56.7
0.200" 134.2 108.0
0.300" 199.3 153.0
0.400" 247.8 188.1
0.500" 280.1 221.0
0.550" 291.9 229.2
0.600" 297.1 236.7

do you think it is worth the extra thousand dollars for the ported version? These heads are already expensive.

and what would the HP difference be between the two for N/A and supercharged?

 

Nice build! I just did a similar build with my 5.4. I ended up with the PI swap and a set of Comp Cams.

 

What intake and cams are you going to put with them? What exhaust? How much the porting is worth will be largely dependent on the rest of the combo and the intended rpm range. The as-cast TFS heads will support a LOT of power, it would have to be a pretty serious build for the porting to be cost-effective at all.

 

for now i am probably going to be using the stock intake manifold off a 99 or newer f-150.
From what i have read all the aftermarket intakes make more horse power overall but they trade a lot of low end. This is going in my daily driver for now so its not going to be spinning 6500 rpms all the time.

The guy at paschal told me that the trick flow heads have a revised intake valve angle that changes the lobe center separation angle. So it is best to use the trick flow cams or a custom ground set.

Like i said i want to keep the power low in the rpms so i dont want real wild cams either.

exhaust will be long tubes, xpipe, high flow cats

I figured the porting probably wasnt worth it since the heads already flow really well.
I just wanted some other opinions on it.

 

Don't bother with the porting, waste of money with that intake. I'd contact Nick at Modular Head Shop about cams, he has truck specific grinds for ported PI heads and can probably tailor one of his TFS grinds for a truck also.

http://www.modularheadshop.com/Cams.htm#TFS cams

 

where did you get your pistons and rods from?