Ultimate Budget 2v Motor

[98snakehorse]

Alright everyone I know there are plenty of threads in relations to this post but I am wanting the most updated responses with the direction I am going in. This isnt something I plan on doing right away but its information I feel is important before I start throwing more power at my car. My current setup is a completely stock 02 PI 2v longblock, boltons and a blower. Car is making right around 400rwhp. Plans are to go intercooled and start cranking the boost up but really not wanting to put much more stress on these stock internals and ruin this 2v block.

So here is my plan. I want to build a very budget oriented 2v. I have a good NPI shortblock sitting in the corner of my shop and was thinking of building it up or even my current PI block. My goal is to get the car up to 600hp down the road. Im just going to make a bullet point of questions below here....

• Will the cast romeo block be able to handle it or will I need to go teksid? Really dont want to source other blocks.
• Will the stock crank be able to handle the power? Heard they can take quite a bit of abuse.
• Will boss rods work in both the NPI or PI 2v's? I heard they are quite a cheap alternative and can handle some power.
• Whats the best budget friendly pistons to go with?

I guess me who has never built an engine before am missing quite a few things that will need to be purchased but that is why i posting these questions. Figured it would make more since to have a stout engine before I go throwing lethal pressure into a glass house 2v lol. Thanks for all the help.

 

[Thomas_W]

The stock block and crank should be OK around 600. I believe that is pretty close to the limit of the cast crank though.

The MMR 600/750SE rotating assemblies are pretty good deals IMO. The 600 uses a stock cast crank, so you could potentially purchase it without the crank for less.

If you can find a set of 03/04 cobra rods/pistons for a good deal and in good condition, thats a viable option as well.

 

[lwarrior1016]

Ive never heard of anyone overpowering a stock cast crankshaft. They are lighter than forged and will hold plenty of power. The boss rods will work in all the 4.6L applications and the way I understand it, they will hold 600-700 (Dont quote me on that). Ive also not heard of anyone over powering a stock block. Lots of guys run 800+ Hp with the stock iron block.

 

[98snakehorse]

Awesome, so what is the process to this then. Buy Boss Rods, some good pistons and have a machine shop clean my current block and reinstall? Would love to put an engine together myself.

 

[lwarrior1016]

Awesome, so what is the process to this then. Buy Boss Rods, some good pistons and have a machine shop clean my current block and reinstall? Would love to put an engine together myself.

Order all your parts, bolts, bearing, rods, pistons, rings, and all the gaskets. If your bores are nice you dont need a machine shop for the block. Then put it all together.

 

[98snakehorse]

Not even joking I will continue this thread for awhile then. I think I found my next project. Building an extreme budget 2v. Will either be intercooling and downsizing pulleys on my blower or go turbo. I think the first thing to be done is building the engine and converting the differential to a locker and all 31 spline.

 

[98snakehorse]

I will start adding part#'s for reference...

Boss Connecting Rods = CR3Z6200B

 

[lwarrior1016]

I will start adding part#'s for reference...

Boss Connecting Rods = CR3Z6200B

I put a linbk up for the boss rods in one of these other threads. If you want me to paste it here I will.

 

[98snakehorse]

I put a linbk up for the boss rods in one of these other threads. If you want me to paste it here I will.

That would be great, if you have a good link to bearing part #'s that will help aswell. I think I am going to be building up the NPI block and throwing on a set of PI heads & Cams

 

[lwarrior1016]

http://parts.autonationfordwhitebea...ine-cat/engine-scat/?part_name=connecting-rod

There are the rods.

 

[lwarrior1016]

http://www.sn95forums.com/showthread.php?71542-Bottom-end-is-toast-Need-Guidance/page6

Thats a link to the page where i posted all the stuff from ebay. It has bearings and studs in it.

 

[DropTopPony]

Too bad there isn't a solid budget piston like the boss rods.

When you order the Boss rods from the Ford dealer you can tell them that you need bolt/gaskets for a rebuild. Most of the stuff is TTY but if you are only building for 600hp you don't need to spend all that extra on ARP. Stock Ford replacement bolts are not bad unless you want to go over 600, MMR offers their own bolts that are between Ford and ARP in price.

 

[vermilion]

The stock block and crank should be OK around 600. I believe that is pretty close to the limit of the cast crank though.

The MMR 600/750SE rotating assemblies are pretty good deals IMO. The 600 uses a stock cast crank, so you could potentially purchase it without the crank for less.

If you can find a set of 03/04 cobra rods/pistons for a good deal and in good condition, thats a viable option as well.

if you pony up the coin for any rotating assembly 1. dont use the 750se. you are limited to buying an oil pump exclusively from MMR. 2. Modmax, CMS and MHS is a better idea.... any stock blocks will hold you. cast cranks do not fail at a certain HP/TQ rating. Piss poor engine harmonics at higher RPMS will kill it. it mainly kills the Oil pump. any Yote rod will work for your 4.6. don't let the negative stigma of a 2V get to you. they can do work.

 

[Thomas_W]

if you pony up the coin for any rotating assembly 1. dont use the 750se. you are limited to buying an oil pump exclusively from MMR. 2. Modmax, CMS and MHS is a better idea.... any stock blocks will hold you. cast cranks do not fail at a certain HP/TQ rating. Piss poor engine harmonics at higher RPMS will kill it. it mainly kills the Oil pump. any Yote rod will work for your 4.6. don't let the negative stigma of a 2V get to you. they can do work.

where do you see the 750SE havint to use a MMR exclusive oil pump? Last i saw, the Ford Racing pump was pretty commonly abailable from multiple vendors.

 

[98snakehorse]

Great info, Yeah looks like the pistons will be the high portion price of all of this. Unless I kind find a good conditioned termi set of pistons.

 

[96blak54]

Or a set of lightning pistons.

 

[98snakehorse]

So I began tearing down the old NPI spare block I have, all the internals looked to be in great shape for 140+k on the engine. Main bearing and rod bearings looked great with very minimal scaring. Bores are in great shape too just need to clean the crap out of the block.

So here is a list of parts with pricing I have. Let me know of any major things you see I missed. I still dont know what I am doing for pistons but am budgeting about $650 for whatever it is I go with it will need to be for a factory bore npi 4.6 . Also what thickness HG should I go with? Setup will be a NPI block with PI heads and boost.

Item Price
Boss Rods $180
Main Studs $115
Head Steads $280
Main Bearings $115
Rod Bearings $110
Cometic HG $118
Pistons $650

 

[Nighttrain]

What cr do you want? 10:1, 10.5:1 will benifit boost but you might be limited to how much you put to it. The thicker the gasket the lower the cr.

 

[96blak54]

You also didnt figure in the price for piston rings. Youre gonna want good ones... $200

I suggest a thicker head gasket for forced induction, but the stock is fine. Lots of forved induction folks have great luck with felpro headgaskets

 

[98snakehorse]

What cr do you want? 10:1, 10.5:1 will benifit boost but you might be limited to how much you put to it. The thicker the gasket the lower the cr.

Im not 100% sure dont want too much compression but enough for that happy medium.

You also didnt figure in the price for piston rings. Youre gonna want good ones... $200

I suggest a thicker head gasket for forced induction, but the stock is fine. Lots of forced induction folks have great luck with felpro headgaskets

Thanks yes I kind of added that on, I was looking over on modmaxracing at their product line. Couldnt find much info on other aftermarket pistons. It was around 650 or so with their ring set for the forged piston assembly. No idea of their quality just a short search.