Possibly buying GT350 today, any last minute advice?

[JetGray_Mach1]

Running it up to redline early on is not good. For the first 500 miles, you should avoid going over 4k rpms. You definitely want to coast down in gear. The engine braking vacuum is what seats the rings more than anything else.
Then from 500-1k miles, I avoided going over 6k rpms. After 1,100 miles, it was all out.
Obsessive maybe, disciplined extremely. But at 17K miles now, I never have to add oil between my yearly oil changes. The only oil I lose is the 2-3 ozs my oil seperator filters out.And I consistently drive in the 7k-8k rpm range now.
Break in the engine correctly, and barring any inherent mechanical defects, your engine will last and perform as it should.

I have a Coyote but this is basically what I followed. I think city driving with constant rpm changes helps too. I burn about 1qt or less per 6K miles now with 22K on the clock. Falls in line with my Previous Gen 1 coyote which I broke in the same way.

Sponsored

 

[K4fxd]

Running it up to redline early on is not good. For the first 500 miles, you should avoid going over 4k rpms.

How many engines have you built? How many of them have you broke in on a dyno.

Believe what you want.

 

[Postal Bob]

How many engines have you built? How many of them have you broke in on a dyno.

Believe what you want.

I believe what I've read, because I've put it to the test, and my car does not burn any oil. Unlike many I hear who consider 1qt/5K miles as ok.

 

[K4fxd]

https://www.enginebuildermag.com/2018/05/how-to-break-in-your-piston-rings-the-right-way/

https://www.us.mahle.com/media/usa/motorsports/mms-break-in-recommended-procedure-web.pdf

 

[ice445]

https://www.enginebuildermag.com/2018/05/how-to-break-in-your-piston-rings-the-right-way/

https://www.us.mahle.com/media/usa/motorsports/mms-break-in-recommended-procedure-web.pdf

The real question is why every single oem recommends a gentle break in? It's hard to believe they haven't tested this themselves

 

[K4fxd]

It's for the rest of the car's running parts.

 

[Champale]

It's also for liability purposes. They don't want people leaving the parking lot in their new GT500/Hellcat/etc at full throttle and crashing. The Hellcat engines were run for 45 minutes on a dyno at all revs before they were shipped out so there is probably not much a new owner could do to hurt them.

The ones that never made sense to me were 90s Japanese motorcycles - Kawasaki used to put stickers on the tachs that said "Keep revs under 4000rpm for the first 600 miles" no matter if it was a single cylinder 650cc which redlined at 6500 or a 600cc 4 cylinder supersport bike that revved to 14k plus. Seemed like the sticker was just a "hey take it easy while you get used to the bike" type of warning.

 

[dpAtlanta]

For the first 500 miles, you should avoid going over 4k rpms.

Well, I misread the entire break-in thing. I thought it was nothing over 2000 rpm until 50000 miles. Dyslexia? My bad!
I just crossed 50K and I now I am excited about seeing if I will get any better performance with revs over 2K.
Does this VooDoo do anything after 2000 rpm's?
Maybe I should have read the manual.
Maybe it will be more peppy?








REALITY DISCLAIMER
Yeah uh... NO

 

[SL8888]

Since I purchased my GT 350 new with 4.5 miles on it, I followed the breaking in procedure on page 26. That first 100 miles was a real chore to keep my passions within due bounds.
After the first 100, I make sure the oil temp is up to 150 degrees before I let it eat !
19K miles and 28 HPDE track days no loss of oil. Just gets thirsty (small fuel tank ?) and needs new cup 2s regularly (alignment problem ?)

 

[K4fxd]

Talk with ring manufacturers and engine builders.

Ford is in the business of selling cars.

To the OP congrats on your new to you car.

 

[Inthehighdesert]

Believe it or not but back then with Kawa. it didn’t really have to do with the engines. They had the very unfortunate high stat of fatalities and their bikes. Specifally the ninja’s. Kawa. back then had an issue with tank slap on their sport bikes In certain types of turns. The other brands had it a bit to but not to the extent Kawa. did. I was into to Gsxr’s.. My first was a european spec 85 that was brought in to the US by the Galles Indy team for me. Had a good friend that was on the team. They weren’t available in the US till 86. I had several friends that wadded their ninja’s back then and a few that never got to ride again. Dealers were turning kids lose, I was young to, on machines that the performance was unreal with zero regard. All my bikes had steering stabilizers waiting as they came off the showroom floor, ohlins setups as well.

Damn, that shows my age.

It's also for liability purposes. They don't want people leaving the parking lot in their new GT500/Hellcat/etc at full throttle and crashing. The Hellcat engines were run for 45 minutes on a dyno at all revs before they were shipped out so there is probably not much a new owner could do to hurt them.

The ones that never made sense to me were 90s Japanese motorcycles - Kawasaki used to put stickers on the tachs that said "Keep revs under 4000rpm for the first 600 miles" no matter if it was a single cylinder 650cc which redlined at 6500 or a 600cc 4 cylinder supersport bike that revved to 14k plus. Seemed like the sticker was just a "hey take it easy while you get used to the bike" type of warning.

 

[Inthehighdesert]

I’d run my motors, specifically the 600inch a d north stuff on the dyno first. Then the usual procedure in the boat. I ran straight 30 weight. It’s still weird to me the viscocity’s now.

https://www.enginebuildermag.com/2018/05/how-to-break-in-your-piston-rings-the-right-way/

https://www.us.mahle.com/media/usa/motorsports/mms-break-in-recommended-procedure-web.pdf

 

[Cobra Jet]

So did the OP buy the GT350 or what…

 

[JetGray_Mach1]

OP is out enjoying his ride while the rest here are arguing about a dead horse.

 

[ice445]

OP is out enjoying his ride while the rest here are arguing about a dead horse.

Let's be honest, this is usually how it goes around here lol

Sponsored