WTF 28,7 PSI on a 4 bolt heads
04-08-2011, 10:05 AM
#21
I find it interesting that if its a 4.00 bore, then it makes 28.82 hp per square inch of the piston. Figure a 4 bolt (oem style turbo buick head) can make 750 crank hp now which is about 20.97 hp per square inch of the piston. The buick would probably be over the 28 psi also....I know I ve heard in the 35+ psi are. Obviously flowing through junk heads compared to any ls engine too. Most of the stock block buicks are running air to air intercooler too.
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I dont know what the diameter of a stock turbo buick head is, but you may want to double check the math for it as well to compare apples to apples.
04-08-2011, 10:09 AM
#22
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I went to Nelson's shop one time before he got big in the mags and picked his brain for an hour. Basically he spends tons of dyno time figuring things out for himself. So he spent the coin to figure out what works. From my discussion with him, he used to ask ITS what turbo to do x on y engine and got mixed or poor results. The 1500 hp twin 72mm gen1 427 is the result of him giving up on asking others. (and the 2 58m turbos collecting dust in my garage I got cheap) The 427 mule was on the dyno when I was there. He orings and copper gaskets his motors along with a special "glue" for the gaskets. The glue process was out lined during the F bomb build iirc. Tom's just like a lot of vendors, buy some of his stuff and he will answer a few of your tech questions. I even got some free cam info out of Duttweiler one time just before they politely hung up.
Interesting about the 23 psi on 4 bolt heads....that would be about equal with a 3.80 bore turbo buick in cylinder pressure(hp) with a oem 4 bolt head.
04-10-2011, 04:22 PM
#24
People on here make me laugh at times! People are happy to question a shops craftmanship and figures just beacuse they haven't 'SEEN' anyone using there engines. Come on guys, Nelson Racing has a reputation and the BIG guys go to them for work. If the stuff they built was cr*p then they would be out of business by now. They can't be living off bank loans.
Not questioning anyone other shop out there at all! They ALL do a GREAT job at pushing these engines harder and faster.
Not questioning anyone other shop out there at all! They ALL do a GREAT job at pushing these engines harder and faster.
04-11-2011, 06:02 AM
#25
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People on here make me laugh at times! People are happy to question a shops craftmanship and figures just beacuse they haven't 'SEEN' anyone using there engines. Come on guys, Nelson Racing has a reputation and the BIG guys go to them for work. If the stuff they built was cr*p then they would be out of business by now. They can't be living off bank loans.
Not questioning anyone other shop out there at all! They ALL do a GREAT job at pushing these engines harder and faster.
Not questioning anyone other shop out there at all! They ALL do a GREAT job at pushing these engines harder and faster.
You just completely made that up. No one in here questioned their craftmanship. No one said anything remotely negative about their products. If I had 30 grand jingling in my pocket I would write someone like Viriginia Speed a check and go run an outlaw class or something. That doesn't mean NRE does bad work.
04-11-2011, 05:54 PM
#26
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I think what people are asking is that they here of virginia speed and pro-line etc but they never here of nelson engines going out to the strip and running any numbers. Either way this guy knows his **** and his engines are a work of art.
Javier
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04-12-2011, 02:05 AM
#27
You just completely made that up. No one in here questioned their craftmanship. No one said anything remotely negative about their products. If I had 30 grand jingling in my pocket I would write someone like Viriginia Speed a check and go run an outlaw class or something. That doesn't mean NRE does bad work.
Again im not having a go at what people like Virginia Speed do after all they build some AMAZING race engines.
another thing i think NRE do is total installs. Rather than just giving you an engine or a turbo kit they give you the lot, fully installed. I guess it a bit more of a one stop shop. But hey what do i know! lol
04-12-2011, 12:35 PM
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Nelson Racings work has been brought up on here MANY times now. And every thime people seem to have a very negative feeling towards what they do, hence my comments.
Again im not having a go at what people like Virginia Speed do after all they build some AMAZING race engines.
another thing i think NRE do is total installs. Rather than just giving you an engine or a turbo kit they give you the lot, fully installed. I guess it a bit more of a one stop shop. But hey what do i know! lol
Again im not having a go at what people like Virginia Speed do after all they build some AMAZING race engines.
another thing i think NRE do is total installs. Rather than just giving you an engine or a turbo kit they give you the lot, fully installed. I guess it a bit more of a one stop shop. But hey what do i know! lol
That has nothing to do with this thread though. No one in here bashed them for anything. They do awesome work. They get looked at differently by most people here because they build $20,000 and $30,000 pump gas street motors. Like I said before, if I were going to drop that much coin on an engine It would be making way more power and I would be going Outlaw radial racing.
