Is my 245k miles lq9 ready for boost?
10-17-2011, 12:45 AM
#1
TECH Apprentice
Thread Starter
iTrader: (7)
Join Date: May 2007
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
Is my 245k miles lq9 ready for boost?
Have an 03 sierra denali with 245k miles. Who thinks it is ready for 8psi? Is there anything easy I should swap/add? Thinking about maybe pushrods and valvesprings? Is that necessary?
Already have the 4l80e ready to go in.
Already have the 4l80e ready to go in.
10-17-2011, 01:31 AM
#4
Baltimore Whore
iTrader: (95)
Join Date: Apr 2004
Location: In a van DOWN BY THE RIVER
Posts: 16,820
Likes: 0
Received 2 Likes
on
2 Posts
If it has been well kept/maintained, not buring oil, or smoking, put it to it.. Springs would be a must if they are orig, also be a good thing to do push rods also..
10-17-2011, 01:57 AM
#5
TECH Apprentice
Thread Starter
iTrader: (7)
Join Date: May 2007
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
Seems to have been well cared for, one owner before me and he ran amsoil 0w30 scheduled changes. No smoking or noise or indication of failure. Seems to stil run strong. Thought about doing a compression test first but not sure if that is even worth it. I will be keeping the boost down for now so seems like it might hold?
10-17-2011, 12:02 PM
#7
11 Second Truck Club
iTrader: (7)
Join Date: Nov 2007
Location: Cedar, MN
Posts: 800
Likes: 0
Received 0 Likes
on
0 Posts
Do a leakdown test and that will tell you just about everything such as burnt valves, rings, etc... As said, springs and pushrods probably required, otherwise these engines are known to run very well with more miles then that.
Trending Topics
10-21-2011, 06:55 PM
#10
TECH Resident
iTrader: (36)
Join Date: Dec 2006
Location: Lafayette, CA
Posts: 990
Likes: 0
Received 0 Likes
on
0 Posts
If it's not ready by now, it won't ever be... :-)
Spend your money on a used, low mileage longblock. Otherwise you'll just be buying a used, low mileage longblock or rebuilding your current worn out motor by the time you get your forced induction dailed in.
Your engine might be marginaly fine at the moment but add the stress of boost and your worn rings and loose bearings will be singing a different tune. IMO, unless you can afford the downtime and cost to do both right now, do the motor first.
Rick
Spend your money on a used, low mileage longblock. Otherwise you'll just be buying a used, low mileage longblock or rebuilding your current worn out motor by the time you get your forced induction dailed in.
Your engine might be marginaly fine at the moment but add the stress of boost and your worn rings and loose bearings will be singing a different tune. IMO, unless you can afford the downtime and cost to do both right now, do the motor first.
Rick