Realistic life expectancy of a stroker motor on a D/D???

juiced_94gt · Jun 6, 2007

What do these engines last?? considering it's built right with good parts, a good tune, and justa a cruising foot with the occasional stop light drag race or freeway staight??? I will use my 331 stroker EVERY day, rain or shine, i dont beat on my cars but do get on them when i have to, i have been to the track twice in 4 years, always use synthetics and well you get the picture, do these engines have what it takes to last like a stocker??? or are they just doomed from the begining?? i only hear of people with 8-15k on their stroker's...why???

WhiteDevil · Jun 6, 2007

This is a good thread. I have 7k on my 347 now i finished it last august. This thing better last for at least 50k.

Pokageek · Jun 6, 2007

50k? It better last 150k

Blackened302 · Jun 6, 2007

Pokageek said:
50k? It better last 150k

my thoughts/hopes exactly

Pokageek · Jun 6, 2007

I would understand nitrous car ..on a bad tune? lol. .. or a blown car with an average tune but unless it is making too much power for the block, a well built n/a should last us all a good long time. Anyone disagree?

gcomfx.com · Jun 6, 2007

Pokageek said:
50k? It better last 150k

Exactly. My bone stock engine lasted aprox 195,000 miles - spraying the poo out of it for 6.5 years. If I don't get well over 100k out of this new engine. My engine builder is going to get an ear full.

Danman765432 · Jun 6, 2007

wow Paul i didnt know your engine had that many miles on it...i guess my car is looking good at 85k

5spd GT · Jun 6, 2007

A stroker will last quite a long time depending on how you treat it and how high you rev it.

A stock engine can go over 200k with real good care...a stroker will be less. How less is hard to tell...

Pokageek · Jun 6, 2007

5spd GT said:
A stroker will last quite a long time depending on how you treat it and how high you rev it.

A stock engine can go over 200k with real good care...a stroker will be less. How less is hard to tell...

2 questions. Why will a stroker be less miles? What do you mean by how high you rev it? Just curious as to what facts or experience you are using to support that. Thanks.

True 5.0 · Jun 6, 2007

Life expectancy is hard to predict. A stroker motor will have faster piston ring wear and maybe a piston slap issue due to the shorter skirts. Other than that, the rest of the engine is unchanged. Obviously, the more you beat the engine, the shorter its life expectancy. I would say that you should at least expect 75% to 80% of the life of a stocker.

cbarr300 · Jun 6, 2007

take good care of your stuff and it'll take good care of you

i'd say 150,000 should be the least a DD stroker will get....given you take care of it.

go-stang5.0 · Jun 6, 2007

So far about 15k-20k mi. on my motor got together july of 2003 and been drivin since october of 2003. Car gets open tracked (road raced) and motors been problem free. Thast even on a stock cpu. I'm going to a custom cam very soon and a tune ..finally. THe new cam is pushing .600 lift" so I may have a valvetrain refreshment somewhere in the life of the motor but thats about it.

Grn92LX · Jun 6, 2007

juiced_94gt said:
i only hear of people with 8-15k on their stroker's...why???

Because people who build strokers usually don't daily drive them.

Go 347.

juiced_94gt · Jun 6, 2007

Humm...I will not EVER rev my car past somewhere like say 6300 RPM so i guess i should be ok, it's good to hear a 20k in this thread because it would have sucked to drop like 9k on a motor and only last three oil changes LOL.

juiced_94gt · Jun 6, 2007

Grn92LX said:
Because people who build strokers usually don't daily drive them.

Go 347.

I drive EVERY day, i hate cars that collect dust in the garage, thats why i went 331, from what i hear it has better reliability if it's true or not i will never know.

Grn92LX · Jun 6, 2007

juiced_94gt said:
I drive EVERY day, i hate cars that collect dust in the garage, thats why i went 331, from what i hear it has better reliability if it's true or not i will never know.

It isn't true at all just so you know

final5-0 · Jun 6, 2007

5spd GT said:
A stroker will last quite a long time depending on how you treat it and how high you rev it.

A stock engine can go over 200k with real good care...a stroker will be less. How less is hard to tell...

True 5.0 said:
Life expectancy is hard to predict. A stroker motor will have faster piston ring wear and maybe a piston slap issue due to the shorter skirts. Other than that, the rest of the engine is unchanged. Obviously, the more you beat the engine, the shorter its life expectancy. I would say that you should at least expect 75% to 80% of the life of a stocker.

Grn92LX said:
Because people who build strokers usually don't daily drive them.

Go 347.

I like how all these guys said it

For NA ... I'd not give up the cubes of going 331 :Word:

This seems kinda familiar

Grady

bchilt · Jun 6, 2007

Mr. George Reid says that the key to any engine is found on the bottom end, in other words, the short block. If you invested wisely here and control your lead foot (woohoo !!!), then the engine should last quite a while.

How to Build Max Performance: Ford V8s on a Budget by George Reid

5spd GT · Jun 6, 2007

Pokageek said:
2 questions. Why will a stroker be less miles? What do you mean by how high you rev it? Just curious as to what facts or experience you are using to support that. Thanks.

Sure.

The rod ratio is steeper, when going up in cubes. 302<331<347

Steeper rod ratio applies more side pressure to the cylinder walls. This increased pressure and friction will wear down the rings at a quicker rate. Very small difference though.

Now, onto the higher revving. It goes hand and hand with the higher you rev it, the more likely you have a 'racier' engine. A racier engine is not taken care of as far as going for longevity.

In other words, a daily driven stroker is not going to see the rpms/beatdown that a guy with a 'play street car' or track king is going to see. They typically do not last as long.

Also, some guys with the 347 for example get the 5.4" rod. This rod/piston combo (shorter piston/longer rod) puts the wrist pin in the oil ring land. Heat from the piston crown area pushes oil way from the wrist pin area. An engine likes oil, it doesn't like it when it is pushed away Again, with the oil ring land being 'cut' it will seap oil past it at a much quicker rate in mileage than a 5.315" rod/longer piston.

Just stick with a 5.315" rod and a good builder and you can get 100k if you take care of your engine

5spd GT · Jun 6, 2007

Grn92LX said:
Because people who build strokers usually don't daily drive them.

Yep.

...and might I add some get an incorrect builder and incorrect parts for longevity (example: 5.4" rod - oil ring land intersected.)

Realistic life expectancy of a stroker motor on a D/D???

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