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Post deleted by Defbob
[Re: TrxR]
#462991
09/09/09 08:37 PM
09/09/09 08:37 PM
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Anonymous
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Re: HEMI...TURBO ?????
#462992
09/09/09 08:50 PM
09/09/09 08:50 PM
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Joined: Feb 2006
Posts: 973
New Brunswick, Canada
TrxR
super stock
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super stock
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Posts: 973
New Brunswick, Canada
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If I remember right their argument was something to do with the hemi not liking to spool the turbo as well. In my case I wouldnt be using old alki parts as it needs to be totaly streetable but where the heads are more expensive to buy they wouldnt need the extra in port work compared to the wedge heads so I think the biggest extra would be in the valve train.
PS I went back and looked at some of the forums and it wasnt Don Bailey I guess as he said he like the Hemi better than the wedge as it was better at scavenging.
Last edited by TrxR; 09/09/09 09:06 PM.
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Re: HEMI...TURBO ?????
[Re: R_Blaha]
#462993
09/09/09 09:28 PM
09/09/09 09:28 PM
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Joined: Oct 2005
Posts: 368
back home in georgia ,lake sid...
105630
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enthusiast
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back home in georgia ,lake sid...
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Quote:
there was a black 72 chanllenger at greatlakes Dragaway in Aug with a twin turbo hemi set up. I didn't get to see him run but I heard him fire the car up and it sounded mean as heck!!!! 
More than likely it was Brian Hicks -low 7's last outing ,should be high 6's buy now.
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Re: HEMI...TURBO ?????
[Re: 70dusterjohn]
#462996
09/10/09 10:45 PM
09/10/09 10:45 PM
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Joined: Oct 2007
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New York
polyspheric
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you can't run a turbo on a HEMI, cause the way the heads are made
354 hemi with single turbo: 1955
Boffin Emeritus
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Post deleted by Defbob
[Re: polyspheric]
#462997
09/10/09 11:09 PM
09/10/09 11:09 PM
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Post deleted by Defbob
#462998
09/10/09 11:12 PM
09/10/09 11:12 PM
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Re: HEMI...TURBO ?????
#462999
09/11/09 12:46 AM
09/11/09 12:46 AM
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Joined: Jan 2003
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DFW
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I know the Mallicoat Brothers ran a twin-turbo Hemi in their funny car back in the sixties. I think it ran in AA/GS. I think Ohio George ran a SOHC motor with turbos too! I think the 354/392 might do better on gas than the 426 since the combustion chambers are smaller.
Floyd Lippencott IV
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Re: HEMI...TURBO ?????
[Re: 70dusterjohn]
#463000
09/11/09 04:17 AM
09/11/09 04:17 AM
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Joined: Dec 2006
Posts: 506
Texas Afghanistan Iraq etc.
DakFink
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Texas Afghanistan Iraq etc.
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Quote:
I have heard that you can't run a turbo on a HEMI, cause the way the heads are made. Is there any truth to that.. JUst thinking about a future project.. Thanks..
Who-ever told you that needs to go back and Re-learn Hemi's and Turbos.
Hemi head technology is all over the Turbo world. All of your 3 & 4-valve per-cylinder heads are a variation of Hemi technology. Almost all of the Turbo factory motors out there run a 4-valve penta-roof (Mini-Hemi) head.
The shorter direct Intake runners and the shorter more efficient scavenging exhaust make the Hemi head the Ultimate choice for Turbos.
Hemi won't spool a Turbo??? UMMM only if your running one off a Detroit or Cat Diesel the size of a wash-tub. You can have a turbo set up to spool when and where ever you want it. That's why you need to work with the Turbo MFG's and a shop that specializes in Turbos to get your set-up right.
10 years ago a GT-35 turbo on a 2.0L Mitsubishi was thought to be the limit of streetability. Today they run GT-850's (twice the size of a GT-35) on street cars with the same engine sizes.
A turbo has 2 sides. Turbine (exhaust) and Compressor (intake IE: Boost) they both can be custom matched to your application and should be.
I'm working on a 468cui W9-RP headed small block for myself. I wish there was a Hemi-Configuration for a Small block.
Hemifred also just verified some of my thoughts/ worries about the heads I have. They flow HUGE numbers, but were built for an Alcohol Motor. When a similar set was tested on an N/A gas motor they fell on their face at about 6500 rpms.
They should hold up pretty well though with the CUI and Boost.
The simplest I ever heard it put for Turbo Heads and this was from one of the top guys in the outlaw classes. " For boost, buy the biggest and best flowing head you wallet can afford".
When you deal with boost things actually get a lot simpler. You just have to re-learn some theories and remember to forget somethings you have learned about N/A motors.
Look at some known Streetable Turbo Builders like Tom Nelson, Steve Petty, and some others look at what they do. Steve Petty would be a good-one as well he builds Turbo Hemis too.
Bewteen Hemi-fred and Steve Petty (Pro-Line race engines) you should have no questions about building a Turbo'd Hemi.
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