Darton strokers and boost??
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 1,106
Likes: 0
From: Norwich NY
Darton strokers and boost??
I was passed info on from a forum vendor today. The guy was told it is not recomended to run over 10lbs of boost in a Darton sleaved motor.
Anyone hear this before or running more boost in one of these motors?
Thanks in advance.
Anyone hear this before or running more boost in one of these motors?
Thanks in advance.
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Personally I would not even run 10psi on them and dont even recommend them to people with holes burning money in their pockets. And it does not matter if its an old wet or a MID block. Only thing sleeved I would concider doing is a LS2 based dry sleeve.
Phil
Phil
NCM, WSCC &amp;amp; SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
Originally Posted by Fastbasser
I was passed info on from a forum vendor today. The guy was told it is not recomended to run over 10lbs of boost in a Darton sleaved motor.
Anyone hear this before or running more boost in one of these motors?
Thanks in advance.
Anyone hear this before or running more boost in one of these motors?
Thanks in advance.
Katech, who has exclusively handled all of GM Racing stuff for many years is supplying 427 Sleeved motors built to spec. and for boost.
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,597
Likes: 1,712
From: Converse TX
Originally Posted by #001 2001 Z06
We are running more boost than that reliably on a road race daily driver 427 STS TT and have now for sometime. It's all in the build, the cooling and the tune on any stroker. This is pretty much true for any motor. You should not cut any corners. The built drivetrain is really the next weak link, in my case, due to the torque.
Katech, who has exclusively handled all of GM Racing stuff for many years is supplying 427 Sleeved motors built to spec. and for boost.
Katech, who has exclusively handled all of GM Racing stuff for many years is supplying 427 Sleeved motors built to spec. and for boost.
NCM, WSCC &amp;amp; SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
Originally Posted by peter pan
You say built for boost 10, 12 or 14+
Yes...on mine
We are doing pretty heavy and thorough R&D & Q&A on everything, slowly testing here and there, checking, re-checking, etc.. and I am also putting together a white paper based on actual case study. It should be about a dozen pages or so. People can take from it what they wish. We also doing different modeling based on slight changes and establishing constants. It's pretty interesting what comes out of the process. I have actually ran the car at full tilt for an hour, the hottest the coolant temp. got was 212.
Details later on another thread.
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
I don't see the need for much increased displacement. the LSx engines make plenty of torq NA, and on boost it goes through the roof even when stock. just the opposite, I think going shorter on stroke, and bigger on bore to let those big ports unshroud and breath and extend the power band a few hundred more RPMs is a much better approach.
the indy guys "destroked" the 3.8 v6 buick to do the Stg II menards, and with turbos to power is in the pump not the displacement.
there is replacement for displacement, it's called CFM. an engine is just an air pump, use the turbos to cram as much CFM as needed and make sure the bottom end is stout enough to handle it.
the F1 guys made 1200 + HP out of 110 ci. but LOTS of rpms and boost on pure meth.
I'm more interested in running pure E85 once it comes available. the car would ROCK on that fuel, and it would be much more detonation resistant (although I may need a 4 cyl engine to power the fuel pump!!)
think technology not displacement if you are boosting a muv.
just my 02
the indy guys "destroked" the 3.8 v6 buick to do the Stg II menards, and with turbos to power is in the pump not the displacement.
there is replacement for displacement, it's called CFM. an engine is just an air pump, use the turbos to cram as much CFM as needed and make sure the bottom end is stout enough to handle it.
the F1 guys made 1200 + HP out of 110 ci. but LOTS of rpms and boost on pure meth.
I'm more interested in running pure E85 once it comes available. the car would ROCK on that fuel, and it would be much more detonation resistant (although I may need a 4 cyl engine to power the fuel pump!!)
think technology not displacement if you are boosting a muv.
just my 02
Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
I have a couple of Katech sleeved blocks sitting here I will give your a "SMOKING" deal on. And yes, the pun is intended.
You will also notice that most suppliers like Katech and MTI are only dry sleeving LS2 based stuff as I suggested in my first post.
Phil
You will also notice that most suppliers like Katech and MTI are only dry sleeving LS2 based stuff as I suggested in my first post.
Phil
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Melting Slicks
Joined: Mar 2003
Posts: 3,116
Likes: 10
From: Macomb MI
Originally Posted by M_T_0
why?
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by RoadRebel
Dropped sleeves,cracked sleeves, leaking coolant at the bottom of the the liners is the most common, especially on the MID blocks.
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
sounds like fun almost as much as getting......
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by RoadRebel
Dropped sleeves,cracked sleeves, leaking coolant at the bottom of the the liners is the most common, especially on the MID blocks.
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
sounds like fun almost as much as getting......
Le Mans Master
Joined: Oct 2003
Posts: 8,863
Likes: 86
From: PA
St. Jude Donor '08
Originally Posted by RoadRebel
Dropped sleeves,cracked sleeves, leaking coolant at the bottom of the the liners is the most common, especially on the MID blocks.
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
Toss in plenty of headgasket issues with the cometic gaskets you are required to run with the MID sleeved blocks and you have a shops worst nightmare.
Phil
sounds like fun almost as much as getting......
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Originally Posted by Rkreigh
I don't see the need for much increased displacement. the LSx engines make plenty of torq NA, and on boost it goes through the roof even when stock. just the opposite, I think going shorter on stroke, and bigger on bore to let those big ports unshroud and breath and extend the power band a few hundred more RPMs is a much better approach.
the indy guys "destroked" the 3.8 v6 buick to do the Stg II menards, and with turbos to power is in the pump not the displacement.
there is replacement for displacement, it's called CFM. an engine is just an air pump, use the turbos to cram as much CFM as needed and make sure the bottom end is stout enough to handle it.
the F1 guys made 1200 + HP out of 110 ci. but LOTS of rpms and boost on pure meth.
I'm more interested in running pure E85 once it comes available. the car would ROCK on that fuel, and it would be much more detonation resistant (although I may need a 4 cyl engine to power the fuel pump!!)
think technology not displacement if you are boosting a muv.
just my 02
the indy guys "destroked" the 3.8 v6 buick to do the Stg II menards, and with turbos to power is in the pump not the displacement.
there is replacement for displacement, it's called CFM. an engine is just an air pump, use the turbos to cram as much CFM as needed and make sure the bottom end is stout enough to handle it.
the F1 guys made 1200 + HP out of 110 ci. but LOTS of rpms and boost on pure meth.
I'm more interested in running pure E85 once it comes available. the car would ROCK on that fuel, and it would be much more detonation resistant (although I may need a 4 cyl engine to power the fuel pump!!)
think technology not displacement if you are boosting a muv.
just my 02
Well said!
