I spun a bearing on new motor. I need help with how to proceed with a new short block?

[Proshop]

Am I right?

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[K4fxd]

I can't speak for the OP but E85, while being a great fuel, is a hassle. I ran it for a few months and switched my tune back to 93.

 

[Angrey]

Or at the very least, tune it for 93 (on a 93 boost profile) save the tune. Tune it for E85 on the same pulley/gate setup and then keep the 93 tune handy if you ever get into a jam where you need to fill the tank with pump.

Going from E85 to 93 is pretty safe and easy. Going the other direction needs more care (to fully remove all or most of the fuel).

You get a little bit of a bump from the E85 tune and the added safety. If you ever find yourself running low on fuel or you just want to make a long trip and have the added range, just load the 93 tune at a pump fill up and you're good.

 

[K4fxd]

Having to fill up every 100 miles really sucked. The mustang is bad enough on gas with the tiny tank.

 

[Proshop]

Having to fill up every 100 miles really sucked. The mustang is bad enough on gas with the tiny tank.

True story!! Glad I drive a mile across the street to get to work every day so it doesn’t burn much and rest gets burnt doing a few spirited drives here and there.

 

[Angrey]

Having to fill up every 100 miles really sucked. The mustang is bad enough on gas with the tiny tank.

A good fuel system will alleviate SOME of that If I mind my manners, I can get the better part of 150-175 miles out of a tank, but I'm not scared to run it very low because of my fuel setup. But yeah, it does make planning more intensive.

 

[WildHorse]

Glad I drive a mile across the street to get to work every day

Your doing more harm to the engine like this. Constant short trips are a killer.
OP: I wouldn't worry about the Brenspeed engine.

 

[K4fxd]

it does make planning more intensive.

I only have 2 stations whithin a reasonable distance with E85, so yea, planning was high on the list. Just wasn't worth the hassle for me. If it was a weekend play toy I'd leave it on E. With a good flex tune I'm not scared to fill with E on half a tank and go play.

 

[Proshop]

Your doing more harm to the engine like this. Constant short trips are a killer.
OP: I wouldn't worry about the Brenspeed engine.

I usually find longer routes to take home 1. Because I’ve been told exactly what you said 2. I didn’t spend all this money to not drive the hell out of it.
Appreciate you looking out!

 

[Unas2k5]

Im going to call them about the track pistons they have on there thank you
As far as E85 I don’t wanna fill up or have to stop every 70 miles to fill my tank up. I will run a separate pulley for E85 to race only. It’s already annoying that I have to stop every 100 something miles on 93. I want to enjoy my car I don’t want to drive to the gym and back then have to stop at the gas station plus I dont need 900whp daily im good on the power im gonna get on 93 octane for non-race use.

 

[Cory S]

you will be very Annoyed with this engine for the short period of time that it's good for. its going to sound like a diesel on start up because of the pistons rattling in the bore. that rattle is damaging the cylinders. 2618 pistons are not for engines that you want to put over 30,000 miles. they wear out pretty fast but they are strong. much stronger then you need If you're looking to make 1800 hp or more than absolutely go for the 2618 anything less 4032 is your friend. 4032 Can handle pretty much everything you're gonna throw at it in a street car. It has tight cylinder wall clearances it doesn't expand much. it doesn't rattle on start up. it doesn't where out the cylinders and it last longer

This 2618 v 4032 "debate" is just plain moot. Much of it is marketing.

4032 pistons are cheaper. Why? The forgings are the same price and they cost more to make. The thermal expansion argument was absolutely valid....in 1986. But we were pretty stupid in 1986. The piston to wall clearance is a matter of application and skirt design. In any use where you can destroy a 4032 piston, you can destroy a 2618 piston.

The world is chock full of race engines using 4032 and street cars using 2618.

 

[Jackson1320]

This 2618 v 4032 "debate" is just plain moot. Much of it is marketing.

4032 pistons are cheaper. Why? The forgings are the same price and they cost more to make. The thermal expansion argument was absolutely valid....in 1986. But we were pretty stupid in 1986. The piston to wall clearance is a matter of application and skirt design. In any use where you can destroy a 4032 piston, you can destroy a 2618 piston.

The world is chock full of race engines using 4032 and street cars using 2618.

street engines running 2618 sounding like a diesel and only lasting 20,000 miles. sure

 

[Jackson1320]

This 2618 v 4032 "debate" is just plain moot. Much of it is marketing.

4032 pistons are cheaper. Why? The forgings are the same price and they cost more to make. The thermal expansion argument was absolutely valid....in 1986. But we were pretty stupid in 1986. The piston to wall clearance is a matter of application and skirt design. In any use where you can destroy a 4032 piston, you can destroy a 2618 piston.

The world is chock full of race engines using 4032 and street cars using 2618.

this is from mahle you can see the ptw clearance difference between m142p (4032) and 2618. it's not moot install a 2618 piston with .0006-.0014 clearance and see what happens

 

[Cory S]

street engines running 2618 sounding like a diesel and only lasting 20,000 miles. sure

Again, we going back 40 years?

Hmmm, I never had a piston manufacturer be "quite clear" that 4032 pistons will have longer piston life than 2618's. Just who was the maker that made that claim? And what was their definition of a longer life?

I also never knew anyone who cursed their 2618's for wearing out too fast, and then switched to 4032's.

I’ve ran 2618’s in 4-5 40+K mile builds in the last 28 years. None of them sounded like diesels or only “lasted” 20K miles. My current 2618’s have ALMOST zero slap on cold start. Most people don’t hear it…. .0045” PTW.

 

[Cory S]

https://www.enginelabs.com/tech-sto...ive-into-the-high-end-alloy-with-uem-pistons/

Here’s a good write up about 2618 pistons. FWIW, most built short blocks from most shops are using 2618’s as well. I’d be willing to bet more than half of owners that have installed assembled short blocks, don’t even know what alloy their pistons are anyway.

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