Possible TX Stroker build. (1 Viewer)

[gungriffin]

The big question that I have is what is the plan for fuel? That seems to be one of the big unexplored areas with the 1FZ. Don't these super high HP drag or dune builds just use custom fueling, but they are also doing rebuilds quite frequently. I don't understand this area of tuning super well so I am curious what your plan is. It seems like it will likely be the biggest area of headache. As I understand it, Witts End chose their goals because the HP/TQ will be at the fuel limits for the stock system.

When you say 450 hp are you aiming for that at the wheels or the crank? This drive line loves to soak up the horseys!

 

[jacksna1982]

Yep my money so you guys help with what you think needs to happen to make it work. And a previous poster said the off the shelf kit doesn’t come with pistons and such. It actually does come with everything needed including pistons. I am pretty sure the drive train can handle 450hp. I’m not going to be drag racing the thing. The fuel management I have not touched yet. I was curious what you guys thought. I will obviously get a custom tune if it all happens. But I’m not sure that stock fuel system will keep up under throttle.

 

[jacksna1982]

The big question that I have is what is the plan for fuel? That seems to be one of the big unexplored areas with the 1FZ. Don't these super high HP drag or dune builds just use custom fueling, but they are also doing rebuilds quite frequently. I don't understand this area of tuning super well so I am curious what your plan is. It seems like it will likely be the biggest area of headache. As I understand it, Witts End chose their goals because the HP/TQ will be at the fuel limits for the stock system.

When you say 450 hp are you aiming for that at the wheels or the crank? This drive line loves to soak up the horseys!

Just saw this after I posted. I’m talking crank HP. To get that kind of power to the wheels this engine would take a massive overhaul and likely make 3 passes on a drag strip before needing to be rebuilt lol.

 

[jacksna1982]

Oh and I have been looking on instagram searching 1fz motors since I can’t find anything on google. Guys in the Middle East are making this motor into race motor on the daily. But I can’t find any details on the builds, just images of the finished products.

 

[Tank5]

I say just wing it. Start building, do the stroker then turbo it. I am sure you can figure out the details as you start building. I say this because it is not my money and I think it would be cool to see how it comes out. We do a lot of OCD and over the top stuff on this forum, so I don't see why you shouldn't go for it. It would be nice to follow the build here. I cannot offer any real technical advice but I will cheer you on!

 

[jacksna1982]

I say just wing it. Start building, do the stroker then turbo it. I am sure you can figure out the details as you start building. I say this because it is not my money and I think it would be cool to see how it comes out. We do a lot of OCD and over the top stuff on this forum, so I don't see why you shouldn't go for it. It would be nice to follow the build here. I cannot offer any real technical advice but I will cheer you on!

Thanks Tank, I think figuring it out as I go is what’s going to have to happen for sure.

 

[scottryana]

No, I did not say that it "doesn't come with pistons and such." I said that the aftermarket kit does nothing to address rod length to stroke length ratio. They do not adjust the compression height of the piston, the piston pin size or the stock rod length. And none of those things are stock items anywhere.

To get a 5.2L engine with a 100mm bore that means you have to stroke it to 110mm. The stock rod length is ~152.5mm. That would leave you with a 1.38:1 rod to stroke length. Which puts excessive side pressure on the piston.

Yep my money so you guys help with what you think needs to happen to make it work. And a previous poster said the off the shelf kit doesn’t come with pistons and such. It actually does come with everything needed including pistons. I am pretty sure the drive train can handle 450hp. I’m not going to be drag racing the thing. The fuel management I have not touched yet. I was curious what you guys thought. I will obviously get a custom tune if it all happens. But I’m not sure that stock fuel system will keep up under throttle.

 

[jacksna1982]

No, I did not say that it "doesn't come with pistons and such." I said that the aftermarket kit does nothing to address rod length to stroke length ratio. They do not adjust the compression height of the piston, the piston pin size or the stock rod length. And none of those things are stock items anywhere.

To get a 5.2L engine with a 100mm bore that means you have to stroke it to 110mm. The stock rod length is ~152.5mm. That would leave you with a 1.38:1 rod to stroke length. Which puts excessive side pressure on the piston.

Think I can get 50,000 miles out of the engine before something fails?

 

[scottryana]

Maybe? But why risk it, if the goal is only 450hp? If you just want to spend money, and have a lot of it burning a hole in your pocket. get a custom piston, custom pin, custom rod and custom crank, but unless you plan on racing this truck that is all overkill.

In my opinion, you would be much better off doing a full rebuild, getting Witsend's turbo kit and a high end standalone with a good tune. I spec'd that turbo for up to 600hp at the crank.

Think I can get 50,000 miles out of the engine before something fails?

 

[jacksna1982]

Maybe? But why risk it, if the goal is only 450hp? If you just want to spend money, and have a lot of it burning a hole in your pocket. get a custom piston, custom pin, custom rod and custom crank, but unless you plan on racing this truck that is all overkill.

In my opinion, you would be much better off doing a full rebuild, getting Witsend's turbo kit and a high end standalone with a good tune. I spec'd that turbo for up to 600hp at the crank.

I would totally Be game for 600hp off the witts end turbo but I have no idea how to do that. What do you mean stand alone? Fuel system I’m guessing. Thanks

 

[flintknapper]

^^^^^

Stand Alone ECU

 

[jacksna1982]

^^^^^

Stand Alone ECU

You guys have recs on a stand alone Ecu? I only know of them for more common engines.

 

[jfz80]

There are couple options discussed in past threads. Not sure what the current favorite is but haltech, motec, Mapecu all have options for 1fz engine management along with a few others like aem and megasquirt etc but I’m unsure of their 1fz applications.

 

[jacksna1982]

There are couple options discussed in past threads. Not sure what the current favorite is but haltech, motec, Mapecu all have options for 1fz engine management along with a few others like aem and megasquirt etc but I’m unsure of their 1fz applications.

awesome will start looking. Thank you

 

[scottryana]

With your other plan you would have to use an aftermarket ECU, it’s not going to run without codes on the stock ECU. I hate to be a Debby downer but I think your best bet is to layout your goals and your budget and get feedback that’s appropriate.

 

[jacksna1982]

With your other plan you would have to use an aftermarket ECU, it’s not going to run without codes on the stock ECU. I hate to be a Debby downer but I think your best bet is to layout your goals and your budget and get feedback that’s appropriate.

That’s why I’m here! I can spend about 25k on the Motor before I start regretting it. Throw your ideas at me please. I want a performance 1fz but not to the point that it has to be rebuilt like a race motor or break leaving me stranded in the desert.

 

[flintknapper]

That’s why I’m here! I can spend about 25k on the Motor before I start regretting it. Throw your ideas at me please. I want a performance 1fz but not to the point that it has to be rebuilt like a race motor or break leaving me stranded in the desert.

Part of me wants to see someone do a stroker (5.0 not 5.2) just so we can all see how it turns out...but the practical side of me screams: A 'Robbie built' with turbo. I'm betting it would give you all the performance and reliability you'd want IF your plan is to use the vehicle more than show it off.

On the street....yeah extra horsepower and torque (to a degree) are nice to have. Off-road (especially in low range) it is pretty much wasted under most conditions.

You could spend your savings on so many other things for your Cruiser.

 

[scottryana]

If you really have $25k and want a stroker kit built I will put something together for you. You would have to contact and pay the vendors (CP, Carillo, and Winberg) but I would be willing to draw up the pistons, rods and crankshaft. You would then contact @NLXTACY for a turbo kit, and I would get you part numbers for injectors, fuel pump and ECU. Being in Texas you have some good options for tuners. BUT please tell me $25k is a small amount of money for you because I feel like it would be a waste for most people's needs, when a turbo and stock ECU is pretty decent.

 

[jacksna1982]

If you really have $25k and want a stroker kit built I will put something together for you. You would have to contact and pay the vendors (CP, Carillo, and Winberg) but I would be willing to draw up the pistons, rods and crankshaft. You would then contact @NLXTACY for a turbo kit, and I would get you part numbers for injectors, fuel pump and ECU. Being in Texas you have some good options for tuners. BUT please tell me $25k is a small amount of money for you because I feel like it would be a waste for most people's needs, when a turbo and stock ECU is pretty decent.

I don’t think 25k is a small amount for anyone weather you make 50k or 5mil. But I do appreciate your concern for spending. Maybe I should just start out with the turbo and see how it goes. I want my 80 to drive like my buddies 200 does. But I don’t want a 200, they don’t hold a candle to the 80 off road. So I’m trying to modernize the 80 inside and out. I will be putting the larger fuel tank in and all. I do drive mine almost every day alternating between my “daily driver” and the 80. Thank you again

 

[slow95z]

Looks like I need to source a spare engine and have on a pallet for you. Let me know when you need it shipped...