Coolant leak! MTI 427
Originally Posted by JS
Gm runs a C5r,There is no way a Darton is better than a C5R or they would run one.
I wont believe it and no one will convince me,Put your Darton in a Lemans car and run it for 24Hrs and then tell me its as good.
C5R is the best.
I wont believe it and no one will convince me,Put your Darton in a Lemans car and run it for 24Hrs and then tell me its as good.
C5R is the best.
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Originally Posted by BradWS6
Couldn't agree with you more.
Remember that car runs 24 hours continuously not like our cars that heat up, cool down, heat up, etc, etc. Sometimes cycling a car engine is more harmful that letting it run continuously and puts more strain on the block. Things expand under continuous use and seal itself.
In my line of work we cycle things at high/low temperatures to find out what will fail.
Just my two cents.
Bill
Oh I agree the LS2 for most of us is the only way to go,And thats what I'll go to down the road.Now if your $$$$$ then its worth buying the C5R block and being able to sleep at night knowing u dont have a leaky pos in your garage 
BS,Holding an engine at 4500 to 8500 rpm for 24hrs with multiple pits is much harder on the engine than everyday driving.The C5R is the best big bore block made,no bs water pumps,no bs coolant and no leaks--------->just plain ole GM know how
I do believe that Steve is the only guy to but the Darton from,he knows how to make the Darton work correctly and is a very smart guy.Everyone else is 2nd fiddle to Steve,but imo if u have 3200 for a block,then u have 6K for a block and I'd spend the extra 2800 on the C5R..
JMHO....
I do believe that Steve is the only guy to but the Darton from,he knows how to make the Darton work correctly and is a very smart guy.Everyone else is 2nd fiddle to Steve,but imo if u have 3200 for a block,then u have 6K for a block and I'd spend the extra 2800 on the C5R..
JMHO....
Launching!
Joined: Mar 2004
Posts: 222
Likes: 0
From: Ontario Canada
Problem with the C5R blocks is the availabilty. I have a friend that wanted to locate one and was told for $6500 he would have to wait maybe months. Other than that yeah he could get one one now for like $9K 
I've seen the LS2 dry resleaving process myself and I can say that I think it is much diffrent then sleaving the older blocks. These sleaves I saw cannot drop, it is not just a straight sleave, there is a flange at the top. Max bore is 4.155 due to differences in the water jacket design of the LS2 blocks.
Once these blocks get in use more and are found to be reliable I think they will become more the norm in big bore resleaves.
I've seen the LS2 dry resleaving process myself and I can say that I think it is much diffrent then sleaving the older blocks. These sleaves I saw cannot drop, it is not just a straight sleave, there is a flange at the top. Max bore is 4.155 due to differences in the water jacket design of the LS2 blocks.
Once these blocks get in use more and are found to be reliable I think they will become more the norm in big bore resleaves.
Launching!
Joined: Mar 2002
Posts: 242
Likes: 0
From: Columbia Mo
I am one of the pissed off MTI customers and I know plenty more in the same boat. I hope they take care of you, but I would not send anyone to MTI the poor workmanship of the products I have seen from them and the lip service that followed only served to drain my wallet and leave me completely dissatisfied with them. Your best bet is pony up the $$$$ for the C5R second best is go iron block and so on. The good news is once you get past paying for what you wanted 2 or 3 times you will love the 427 :-)
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Thread Starter
6 Second Club Moderator
iTrader: (7)
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Originally Posted by BigD
Anyone saying a aftermarket sleeved block is "as" or "is" stronger than a C5R block is kidding themselves.
Thread Starter
6 Second Club Moderator
iTrader: (7)
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
BTW, David Coates must have changed his mind. No one from MTI has tried to contact me. Great customer cervice! It's obvious that they don't know how to correct the problem. Sad.
Originally Posted by LASTLS1
Don't take this wrong, but do you have either? This isn't a C5R vs. Darton thread. Each have their purpose. I'm not ready at this point to say the sleeves are junk. If they fail again after Steve at Race Engine repairs the block. Then I will be the one saying C5R or iron is the only way to go. Something more expensive isn't (ALWAYS) the better product. Trust me, If I have another problem with this shortblock (thats not caused be me!). Every possible person on earth I can tell will know!
Thread Starter
6 Second Club Moderator
iTrader: (7)
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Originally Posted by BradWS6
BigD had a MTI Sleeved Block, he got 50 miles out his before it leaked coolant. He got his money back. I had one on order and cancelled from what I saw.
Originally Posted by LASTLS1
I see. He has a bad taste in his mouth. Some people talk without having either, they are just going by hear say. I don't blame him.
Thread Starter
6 Second Club Moderator
iTrader: (7)
Joined: Sep 2002
Posts: 3,682
Likes: 0
From: Lombard .IL
Originally Posted by maddboost
Did you purchase the 427 directly from MTI or did you purchase it from Speed Inc who then bought it through MTI?
Originally Posted by LASTLS1
I bought it through Speed inc.
Originally Posted by BigD
Here is my experience with an MTI "dry sleeve" block that dropped sleeves: All I got was my money back for the sleeved block, nothing else. I had to eat the shipping charges to send the block back, the head gaskets/bolts and all my labor. The guy I did the work for then purchased a C5R block and hasn't had a problems. So I guess I am a little biased. Good Luck!
Typically, I have never heard of a manufacturer warranting parts and labor on items that they don't install.
MTI installed my Dry-sleeve setup. When I returned the car to them for the wetsleeve, I could have had a free dry sleeve replacement, or the wetsleeve for the price of only the sleeves (cost). No charge for labor.
[QUOTE=Visceral]Typically, I have never heard of a manufacturer warranting parts and labor on items that they don't install.
QUOTE]
That's correct, b/c none do.
That's the way the industry is.
QUOTE]
That's correct, b/c none do.
That's the way the industry is.