Longevity of a boosted engine
#1
Junior Member
Thread Starter
Join Date: Oct 2006
Location: Under your sisters bed
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Longevity of a boosted engine
Assuming the engine is in excellent condition with good numbers across the board. All OEM internals, how long would a B18b last boosted? With redline set at 6000 and fuel cut at 6200. I was thinking that since the redline and fuel cut would be so low, that it would be a considerable amount of less stress on the rod bolts and other parts of the engine. Would having the redline set at 6000 be a signifigant improvement on the longevity of a boosted LS?
#2
iTrader: (2)
Re: Longevity of a boosted engine
Longevity is usually relative to tuning & maintenance.
I have tuned b20 & b18a/b turbo setups that have lasted years without issues making anywhere from 250-300 whp.
A revlimit of 6000 is pointless, the revlimit on a stock b18a/b setup should be approximately 7100 rpms.
I have tuned b20 & b18a/b turbo setups that have lasted years without issues making anywhere from 250-300 whp.
A revlimit of 6000 is pointless, the revlimit on a stock b18a/b setup should be approximately 7100 rpms.
#3
Junior Member
Thread Starter
Join Date: Oct 2006
Location: Under your sisters bed
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Re: Longevity of a boosted engine
I understand that the stock limit is 7100 but if the LS's power drops off near 6 why keep revving it to 7? Why not shift and start the power band over..
#4
Honda-Tech Member
Join Date: Jan 2005
Location: Lower Right Hand Corner, PA
Posts: 5,643
Likes: 0
Received 0 Likes
on
0 Posts
Re: Longevity of a boosted engine
My engine has been running for coming up on it's 3rd year now with no hassles.
Ran a stock Dseries at ~210whp for 2 years, daily driven. Never blew, just swapped it out for a built one.
Ran a stock Dseries at ~210whp for 2 years, daily driven. Never blew, just swapped it out for a built one.
#5
Honda-Tech Member
#6
Honda-Tech Member
Join Date: Sep 2006
Location: poopfacepartytime, ca, usa
Posts: 5,856
Likes: 0
Received 0 Likes
on
0 Posts
Re: Longevity of a boosted engine
-It's the STOCK redline
-LS tranny already has big enough rpm drop between gears, shifting lower will only worsen that
-starting over your powerband is not good when you are starting from the bottom of it.
Why don't you just leave the OEM redline where it is, drive it yourself and see what it does, if you want to keep it under 6 its your car do as you like.
#7
Honda-Tech Member
Join Date: Feb 2003
Location: schooling kids in ny, usa
Posts: 9,813
Likes: 0
Received 9 Likes
on
9 Posts
Re: Longevity of a boosted engine
i really see no reason to shift at 6000. i used to have my limiter set at 7400 bone stock motor. just because rev limiter is set at 7400 doesnt mean i always have to shift there, i can still chose to shift wherever i want.
longevity is in tune and how you drive it. i got about 15k boosted miles out of a stock ls making 240 and 205tq. motor had 205k miles when i first boosted it, put it through hell when boosted and it still ran fine and had 165 compression when i pulled it. im still using parts of it on an na build now, years later
longevity is in tune and how you drive it. i got about 15k boosted miles out of a stock ls making 240 and 205tq. motor had 205k miles when i first boosted it, put it through hell when boosted and it still ran fine and had 165 compression when i pulled it. im still using parts of it on an na build now, years later
Trending Topics
#8
Honda-Tech Member
Re: Longevity of a boosted engine
i have friend that lives in philly with a bone stock b18b making 330 to the tires, the engine/car/setup has been running since 2003
#9
Junior Member
Thread Starter
Join Date: Oct 2006
Location: Under your sisters bed
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Re: Longevity of a boosted engine
NA maybe but boosted LS should hold power to 7000 unless your using a tiny turbo, anyhow here are a few reasons to shift at stock redline:
-It's the STOCK redline
-LS tranny already has big enough rpm drop between gears, shifting lower will only worsen that
-starting over your powerband is not good when you are starting from the bottom of it.
Why don't you just leave the OEM redline where it is, drive it yourself and see what it does, if you want to keep it under 6 its your car do as you like.
-It's the STOCK redline
-LS tranny already has big enough rpm drop between gears, shifting lower will only worsen that
-starting over your powerband is not good when you are starting from the bottom of it.
Why don't you just leave the OEM redline where it is, drive it yourself and see what it does, if you want to keep it under 6 its your car do as you like.
Those are good points.
I was just under the impression that 7100, stock redline was nearing the limits of the rod bolts...
I think I'll take your last piece of advice and just see which one feels better.
Its a daily so i'm looking for longevity over peak power.
#11
Honda-Tech Member
Join Date: Nov 2003
Location: South Florida
Posts: 3,711
Likes: 0
Received 0 Likes
on
0 Posts
Re: Longevity of a boosted engine
Honda does not build motor's close to it's limits.
#13
Honda-Tech Member
Join Date: Jan 2005
Location: b00sting my D16s, SoWis, USA
Posts: 7,015
Likes: 0
Received 7 Likes
on
5 Posts
Re: Longevity of a boosted engine
How about you do what Honda figured people would do - shift when deemed appropriate?
Leave the stock redline, tune it just a little past it, and only get near redline when you want/need to. Unless the automotive world suddenly got turned upside down, you don't shift a daily driver at redline every gearchange. I was just looking at a 400whp LS/Vtec, I think over on the eCtune forum. Bone-stock b16 head & b18b block, decent turbo kit. The motors can take a lot on occation.
Keep the boost & rpm's low until you feel spirited, and it will usually last quite a long time.
Leave the stock redline, tune it just a little past it, and only get near redline when you want/need to. Unless the automotive world suddenly got turned upside down, you don't shift a daily driver at redline every gearchange. I was just looking at a 400whp LS/Vtec, I think over on the eCtune forum. Bone-stock b16 head & b18b block, decent turbo kit. The motors can take a lot on occation.
Keep the boost & rpm's low until you feel spirited, and it will usually last quite a long time.
Thread
Thread Starter
Forum
Replies
Last Post
r_wannabe
Road Racing / Autocross & Time Attack
10
10-25-2013 06:40 PM