Darton MID block guys inside......
Thread Starter
9 Second Club
iTrader: (9)
Joined: Nov 2001
Posts: 570
Likes: 0
From: St. Charles, MO
Darton MID block guys inside...... Need to know what head gaskets, studs/bolts, and tq specs you guys are using/running?
Ive got probally 2000 miles on my setup and just started dialing the n2o in and ran into a problem. On the bottle it was shooting coolant out the overflow. Did a leakdown test on it and both sides were leaking. Not sure if its a block problem? head gaskets? studs?
Im am using .053 Cometic's that are made for the Darton MID blocks and used permatex adhesive on the gaskets per MTI's instructions. The block is studded and I torqued the studs too 75 foot pounds.
Really curious what others are running and what is holding up. Ive got another set of Cometic's but a little leary of trying them again.
Ive got probally 2000 miles on my setup and just started dialing the n2o in and ran into a problem. On the bottle it was shooting coolant out the overflow. Did a leakdown test on it and both sides were leaking. Not sure if its a block problem? head gaskets? studs?
Im am using .053 Cometic's that are made for the Darton MID blocks and used permatex adhesive on the gaskets per MTI's instructions. The block is studded and I torqued the studs too 75 foot pounds.
Really curious what others are running and what is holding up. Ive got another set of Cometic's but a little leary of trying them again.
Thread Starter
9 Second Club
iTrader: (9)
Joined: Nov 2001
Posts: 570
Likes: 0
From: St. Charles, MO
Originally Posted by CANNIBAL
Did you re-torque the headstuds after an initial break-in period?
I'm willing to bet the headgaskets are the issue in this scenario.
I'm willing to bet the headgaskets are the issue in this scenario.
No I did not re-torque the headstuds. I wasnt aware that was necessary, and yes I put the heads on
Originally Posted by DOC OTIS
No I did not re-torque the headstuds. I wasnt aware that was necessary, and yes I put the heads on
Originally Posted by cyphur_traq
Yea, ARP bolts/studs pretty much have a 3x torquing procedure. For some reason otherwise they have a tendancy to back off. That actually might be whats happened here. Otherwise definitely agreein with the head gaskets idea.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
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
On The Tree
Joined: Nov 2003
Posts: 162
Likes: 0
Originally Posted by DOC OTIS
Need to know what head gaskets, studs/bolts, and tq specs you guys are using/running?
Ive got probally 2000 miles on my setup and just started dialing the n2o in and ran into a problem. On the bottle it was shooting coolant out the overflow. Did a leakdown test on it and both sides were leaking. Not sure if its a block problem? head gaskets? studs?
Im am using .053 Cometic's that are made for the Darton MID blocks and used permatex adhesive on the gaskets per MTI's instructions. The block is studded and I torqued the studs too 75 foot pounds.
Really curious what others are running and what is holding up. Ive got another set of Cometic's but a little leary of trying them again.
Ive got probally 2000 miles on my setup and just started dialing the n2o in and ran into a problem. On the bottle it was shooting coolant out the overflow. Did a leakdown test on it and both sides were leaking. Not sure if its a block problem? head gaskets? studs?
Im am using .053 Cometic's that are made for the Darton MID blocks and used permatex adhesive on the gaskets per MTI's instructions. The block is studded and I torqued the studs too 75 foot pounds.
Really curious what others are running and what is holding up. Ive got another set of Cometic's but a little leary of trying them again.
Last edited by hydfixer; Sep 19, 2004 at 02:44 PM. Reason: spelling
Thread Starter
9 Second Club
iTrader: (9)
Joined: Nov 2001
Posts: 570
Likes: 0
From: St. Charles, MO
Originally Posted by hydfixer
I am putting my 427 together and have the same gaskets, what kind of sealer did you use? Can't remember by who but was told not to use sealer, did MTI tell you that? If so what kind? Thanks
I'll have to look around and see if I can find the product I used. I know it was made by Permatex and MTI sent it to me, its what they use. Definitely going to make a few phone calls regarding the adhessive.
I appreciate the responses and the advice guys. Hopefully someone will chime that is actually running one of these blocks and keeping the gaskets on it.
Originally Posted by washguy
The permatex product you want is hyolmar...it comes in a tube and a spray...all LPE tt and 427's have this product on the cometic head gaskets 
Wash
Wash Thread Starter
9 Second Club
iTrader: (9)
Joined: Nov 2001
Posts: 570
Likes: 0
From: St. Charles, MO
I've also heard conflicting advice. I tried it this way and it didn't work. Definitely hesitating putting it back together the same way.
Surely someone on here is actually running one of these motors? Id like to know what their using, not what is recommended. Sometimes I feel like I am doing R+D for some of these companies, lol
Surely someone on here is actually running one of these motors? Id like to know what their using, not what is recommended. Sometimes I feel like I am doing R+D for some of these companies, lol
LS1TECH Sponsor
Joined: Oct 2003
Posts: 163
Likes: 0
Originally Posted by 11 Bravo
Where do you get it, and why do you need it if Cometic does not recommend it? Not doubting you, but this is just something else that I am getting conflicting advise on. Want to do it right the first time lol.
you can get it at any major auto supply.... ive seen it done either way,and yes theres conflicting reports.....
Wash 
Originally Posted by DOC OTIS
I tried it this way and it didn't work.
The answer could be a simple as that.
I'd call Steve@Race and ask him what he thinks. He'd be a great source to ask