ls1 v8 5.7l engine with cracked block !!!!!
11-14-2007, 04:50 PM
#1
3rd Gear
Thread Starter
Member Since: Nov 2007
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
ls1 v8 5.7l engine with cracked block !!!!!
Purchased brand new 2002 corvette convertible from gm dealershipin 2002. I have 18000km on it and the engine has a crack on the bottom of the engine block in between the cylinder bores. Only had the dealer do regular oil changes and service to the vehicle. No modifications were done to the engine. Has anyone heard of anyone else have this same problem with their engine with so low mileage. I assume the engine block was defective, how can i prove this? Does anyone know how much a new ls1 v8 5.7l gm engine costs? If you can help please respond, thank you!
11-14-2007, 05:04 PM
#3
What are you hoping to do? Make GM pay for a block? Doubt that would happen even with dozens of people having the same problem. It's a 5 year old car-maybe if you had an extended GM warantee (I bet they would even try to snake out it it then) but I'm betting your on your own here.
11-14-2007, 05:05 PM
#4
Melting Slicks
How do you know it's cracked? Leaking fluids (oil/water?)
Sounds pretty strange, but you would think GM would at least take a look and perhaps offer some sort of "good will" towards the problem, if in fact it was a faulty casting.
Don't envy the position you are in. In fact...it really SUCKS!
Good luck ---->
Sounds pretty strange, but you would think GM would at least take a look and perhaps offer some sort of "good will" towards the problem, if in fact it was a faulty casting.
Don't envy the position you are in. In fact...it really SUCKS!
Good luck ---->
11-14-2007, 08:04 PM
#7
Racer
Member Since: Apr 2007
Location: Dayton Ohio
Posts: 355
Likes: 0
Received 0 Likes
on
0 Posts
Are you leaking antifreeze or oil?
How big is the crack?
Many years ago I was the GM engineer in charge of sealing aluminum compressor housing and went on to become sales mgr. for a sealing company. I dealt with all types of leaks in casting.
We sealed porosity leaks with a process called impregnation where sodium silicate or polyester resin (one being Loctite) was forced into the voids in a large autoclave at 100 psi.
This was also done on aluminum jet engine pumps but was not always successful. The pump housings were bolted to a plate and tested under thousands of pounds pressure. If some of them leaked the test tech. picked up his chisel and hammer and peaned over the leaking area. It works and holds.
I would suggest that if you can reach it with a small right angle drill- drill a small hole at each end of the crack. Pean over both sides of the crack. Then by some JB Weld and seal with that. JB weld makes some great stuff.
If you have a crack that bleeds into a connecting cylinder then you must replace. Hope I have been of some help.
How big is the crack?
Many years ago I was the GM engineer in charge of sealing aluminum compressor housing and went on to become sales mgr. for a sealing company. I dealt with all types of leaks in casting.
We sealed porosity leaks with a process called impregnation where sodium silicate or polyester resin (one being Loctite) was forced into the voids in a large autoclave at 100 psi.
This was also done on aluminum jet engine pumps but was not always successful. The pump housings were bolted to a plate and tested under thousands of pounds pressure. If some of them leaked the test tech. picked up his chisel and hammer and peaned over the leaking area. It works and holds.
I would suggest that if you can reach it with a small right angle drill- drill a small hole at each end of the crack. Pean over both sides of the crack. Then by some JB Weld and seal with that. JB weld makes some great stuff.
If you have a crack that bleeds into a connecting cylinder then you must replace. Hope I have been of some help.
11-15-2007, 08:07 AM
#10
Administrator
Member Since: Mar 2001
Location: In a parallel universe. Currently own 2014 Stingray Coupe.
Posts: 343,020
Received 19,307 Likes
on
13,978 Posts
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-
'20-'21-'22-'23-'24
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Haven't really heard of the blocks developing cracks, especially at such a low mileage. Good luck with getting it either fixed or replaced.
