Can I drive my fresh rebuilt motor with out a tune? Please help
07-19-2018, 02:09 PM
#1
Teching In
Thread Starter
Join Date: Jan 2018
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
Can I drive my fresh rebuilt motor with out a tune? Please help ok so I’m the process of getting my motor rebuilt and want to know if I can break in the motor with out a tune for 500 miles before putting it on a dyno to get tuned. Mods are BTR stage 3 cam with all supporting mods, 243 heads and full bolt ons and forged bottom end, also my compression will be at or around 11.1:1. I have stock 26# injectors on it now but I also have fast 36# if need be.. please let me know what you guys think.. thanks in advance!
07-19-2018, 04:31 PM
#2
TECH Senior Member
I would not do it for 500 miles, but only as far as it is to the tuner. Your stock tune could be too far off from what it needs now. ANY driving before the tune should be VERY light throttle, which is not a good break-in strategy.
07-19-2018, 04:48 PM
#4
TECH Addict
In about 60 minutes on the dyno that motor will be broke in,, remember, most. of
the fastest cars in the world from the OEM,, all get their engines run hard and put
up wet during assembly.. No babying, they just run a constantly changing rpm in the
upper half of the engines rpm range.
Visit places like Rouche, Hendrix,, not their nascar side but their builder side and you'll see a
lot of brand new engines being wound out to 8500+ then crated.
the fastest cars in the world from the OEM,, all get their engines run hard and put
up wet during assembly.. No babying, they just run a constantly changing rpm in the
upper half of the engines rpm range.
Visit places like Rouche, Hendrix,, not their nascar side but their builder side and you'll see a
lot of brand new engines being wound out to 8500+ then crated.
07-19-2018, 05:04 PM
#5
Teching In
Thread Starter
Join Date: Jan 2018
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
ok so I’m the process of getting my motor rebuilt and want to know if I can break in the motor with out a tune for 500 miles before putting it on a dyno to get tuned. Mods are BTR stage 3 cam with all supporting mods, 243 heads and full bolt ons and forged bottom end, also my compression will be at or around 11.1:1. I have stock 26# injectors on it now but I also have fast 36# if need be.. please let me know what you guys think.. thanks in advance!
07-19-2018, 05:11 PM
#6
TECH Senior Member
It's not about breaking it in on the dyno. TUNE IT FIRST!
Trending Topics
07-19-2018, 05:42 PM
#8
Teching In
Thread Starter
Join Date: Jan 2018
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
I’m not skimpin out on a tune.. I’m simply asking is it safe to get a dyno tune with a motor that is going to have 0 miles on it.. I don’t want to waste money on a base tune if I don’t have to
07-19-2018, 06:15 PM
#9
TECH Senior Member
You have to.
07-19-2018, 07:41 PM
#11
ModSquad
iTrader: (6)
I dyno tuned last Saturday morning. I drove the car the week before, 5 miles to set the rings. The morning of the tune was the first real drive, so I basically broke it in on the dyno. I had a startup tune in place, and plugs read fine after first initial 5 mile drive. NO WAY I’d drive your car 500 miles without a tune.
07-20-2018, 03:17 PM
#17
A solid roller valve-train is miles ahead of the old tappet valve-trains. Those needed care during breaking. The solid rollers and hydraulic roller set-ups of today are much more forgiving. These days, you really only need to worry about seating the piston rings.
KW
07-20-2018, 06:51 PM
#19
ok so I’m the process of getting my motor rebuilt and want to know if I can break in the motor with out a tune for 500 miles before putting it on a dyno to get tuned. Mods are BTR stage 3 cam with all supporting mods, 243 heads and full bolt ons and forged bottom end, also my compression will be at or around 11.1:1. I have stock 26# injectors on it now but I also have fast 36# if need be.. please let me know what you guys think.. thanks in advance!
I thought I would baby my brand new LS6 436ci stroker engine many years ago and the rings never seated properly, tons of oil blow by. Tons of oil burning over a short period. It was ruined right from the start because I listened to these fools about 500, 100, 1500 miles of baby driving. Sent it back to the builder and had it re-honed and new rings installed. Put it on the dyno and did like 6 pulls right after it was first started up and allowed to just warm up. I think they did like a 50% throttle pull. Then 75%, then a couple 85% or some **** like that. Then a few wide open throttle pulls. DONE.
That 436ci stroker engine in my sig lasted a long time and never burned oil and was always putting out its 11.3:1 compression it was built to have.
Put it on the dyno and slam it.......PERIOD. Thats what every LSx engine gets leaving the factory. Putting hundreds of miles on it is pathetic, hilarious and down right improper.
.
07-21-2018, 06:54 AM
#20
Rings should definitely seal very quick within a few miles.
The shop that built my vette's SHP Dart 400, didn't have a chassis dyno. So the engine was broken in on the street. Rings seal in less than 4 miles.
I like getting in a couple of oil & filter changes at 500 - 1000 miles or so - after the rings are set. Cut the filter open and check it. Then feel good that the motor is ready and officially broke in.
The shop that built my vette's SHP Dart 400, didn't have a chassis dyno. So the engine was broken in on the street. Rings seal in less than 4 miles.
I like getting in a couple of oil & filter changes at 500 - 1000 miles or so - after the rings are set. Cut the filter open and check it. Then feel good that the motor is ready and officially broke in.