How do NASCAR engines make 750+HP?
10-30-2005, 09:20 PM
#102
The things on the internet that drive people nuts are ridiculous statements such as: a larger carb without restrictor plates only adds 15 hp to a restricted 750 hp Nascar engine. Either that carb was added with the restrictor plates in place or the statement is total bs. People do not have a basic understanding of how engines operate. Then they either get their facts twisted or are too ignorant to realize that their fantastic claims are incorrect. It is a shame there is not a stupid filter.
10-30-2005, 09:43 PM
#106
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Originally Posted by ChucksZ06
People do not have a basic understanding of how engines operate. Then they either get their facts twisted or are too ignorant to realize that their fantastic claims are incorrect. It is a shame there is not a stupid filter.
10-31-2005, 08:30 AM
#107
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The carb wasn't added to a restrictor plate engine. Not all nascar engines run restrictor plates. This was a DYNO TEST ENGINE at Penske's engine shop in Concord, NC. I can give you the name of the guys that worked on the engine and the guy that rebuilt my carb. The carbs they run flow way more than there original CFM's, so a 1050 CFM isn't much bigger.
10-31-2005, 02:42 PM
#108
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from what I have heard, its the lobe seperation on the exhaust and intake. I heard the intake to exhaust open and closed, was a 1 to 1 ratio.
10-31-2005, 04:17 PM
#109
Originally Posted by stang killer
I think people do have a basic understanding of how engines work, I just dont think that everyone has a technical understanding of how engines work.
Over the years I have worked for companies that sold 5 different brands of of a similar product. Even when I worked straight commission I felt it was my job to get my customer the product that best suited his or her needs not what what made me the most money. In turn I have had customers that have followed me over 12 years and 4 different companies because they trusted me.
I feel when you build a performance combination you need to get with someone you can trust because down the road you will need that person.
10-31-2005, 04:28 PM
#110
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Originally Posted by Cstraub
Really its sad to say but this industry is based on more marketing BS then any other industry, or maybe I feel that way because I deal with it everyday. I guess they feed on our nations passion for cars and we just play right into it.
Over the years I have worked for companies that sold 5 different brands of of a similar product. Even when I worked straight commission I felt it was my job to get my customer the product that best suited his or her needs not what what made me the most money. In turn I have had customers that have followed me over 12 years and 4 different companies because they trusted me.
I feel when you build a performance combination you need to get with someone you can trust because down the road you will need that person.
Over the years I have worked for companies that sold 5 different brands of of a similar product. Even when I worked straight commission I felt it was my job to get my customer the product that best suited his or her needs not what what made me the most money. In turn I have had customers that have followed me over 12 years and 4 different companies because they trusted me.
I feel when you build a performance combination you need to get with someone you can trust because down the road you will need that person.
You are 100% correct on that statement. When I am going to be dropping thousands of dollars into something I want to make sure I get exactly what I want. I don't want to have to compromise or get something that I don't need. If someone can help me get what I want then I will be certain to come back to them later if I need anything else.
10-31-2005, 08:38 PM
#111
Originally Posted by Zzambucca
The carb wasn't added to a restrictor plate engine. Not all nascar engines run restrictor plates. This was a DYNO TEST ENGINE at Penske's engine shop in Concord, NC. I can give you the name of the guys that worked on the engine and the guy that rebuilt my carb. The carbs they run flow way more than there original CFM's, so a 1050 CFM isn't much bigger.
This is exactly what I am talking about...of course a reworked carb will flow as much as dominator carb. The discussion was about Nascar engines and how they make there power, with restrictor plates, 'cause that is what they race with. A top nascar team recently took the restrictor plate and nascar legal carb off and replaced them with a stock 1050 dominator. The same car that ran 190 mph in legal nascar trim ran 230 mph without any carb tuning. It takes a lot of hp to add 40 mph to a 3500 lb car. That is what the restrictor plates do...in is not about the carb...it is the plates.
10-31-2005, 10:23 PM
#112
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Originally Posted by ChucksZ06
The discussion was about Nascar engines and how they make there power, with restrictor plates, 'cause that is what they race with.
11-03-2005, 08:39 PM
#113
I picked up a set of nascar rods and a crank used. The Bryant crank was machined perfect and half the weight/size of a normal one, rods had honda journal sizes (small).
Half the rotating mass, twice the air flow and a bottom end made so perfect that it can handle anything.
Half the rotating mass, twice the air flow and a bottom end made so perfect that it can handle anything.
11-04-2005, 12:01 AM
#114
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Originally Posted by Old SStroker
358 cubes is correct. Max bore is about 4.180 or so, so strokes are down around 3.3. Max power on open engines (not plate) probably comes in the high 8's and holds on without dropping much past 9500. It depends on the track and rpm range. Martinsville today showed about 4500-9000. Some track have a gear rule imposed to limit rpm to maybe 95-9700.
The secret is making great BMEP at 8700-9500. IOW, pumping lots of air at those rpms. Cup engines have to use flat lifter cams. 9700 isn 't all that much problem for them now, but it is ungodly expensive to do.
The secret is making great BMEP at 8700-9500. IOW, pumping lots of air at those rpms. Cup engines have to use flat lifter cams. 9700 isn 't all that much problem for them now, but it is ungodly expensive to do.
11-04-2005, 10:43 PM
#115
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Originally Posted by Old SStroker
The secret is making great BMEP at 8700-9500. IOW, pumping lots of air at those rpms.
Originally Posted by treyZ28
The secret is always BMEP at high rpm for racing. I wonder why its still a secret
Choose #3.
It then becomes, "The true cause or explanation, regarded as not obvious, is making great BMEP at 8700-9500." Personally I thought "secret #3" said it better in eight fewer words.
Ain't grammar fun?
11-04-2005, 10:54 PM
#116
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Originally Posted by Old SStroker
se.cret (se'krit) --noun. 1. something known only to a person or certain persons and purposely kept form the knowledge of others. 2. something not revealed, understood or explained. 3. the true cause or explanation, regarded as not obvious.
Choose #3.
It then becomes, "The true cause or explanation, regarded as not obvious, is making great BMEP at 8700-9500." Personally I thought "secret #3" said it better in eight fewer words.
Ain't grammar fun?
Choose #3.
It then becomes, "The true cause or explanation, regarded as not obvious, is making great BMEP at 8700-9500." Personally I thought "secret #3" said it better in eight fewer words.
Ain't grammar fun?
12-17-2007, 10:27 AM
#119
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F1 cars dont have cams since their valves are phenmatic; right?
Anyway, nowone has mentioned the racing engines and series that make the most power - NHRA at 6000 HP with a limit of 500 cubic inches.
Their notro engines are about $100K each and last one or two rounds - approximately 8 or 9 seconds!).
They are also the fastest cars at 340 MPH!
Therefore, F1 and NASCAR engines are pathetic WIMPS!
Anyway, nowone has mentioned the racing engines and series that make the most power - NHRA at 6000 HP with a limit of 500 cubic inches.
Their notro engines are about $100K each and last one or two rounds - approximately 8 or 9 seconds!).
They are also the fastest cars at 340 MPH!
Therefore, F1 and NASCAR engines are pathetic WIMPS!
12-17-2007, 11:26 AM
#120
FormerVendor
F1 cars dont have cams since their valves are phenmatic; right?
Anyway, nowone has mentioned the racing engines and series that make the most power - NHRA at 6000 HP with a limit of 500 cubic inches.
Their notro engines are about $100K each and last one or two rounds - approximately 8 or 9 seconds!).
They are also the fastest cars at 340 MPH!
Therefore, F1 and NASCAR engines are pathetic WIMPS!
Anyway, nowone has mentioned the racing engines and series that make the most power - NHRA at 6000 HP with a limit of 500 cubic inches.
Their notro engines are about $100K each and last one or two rounds - approximately 8 or 9 seconds!).
They are also the fastest cars at 340 MPH!
Therefore, F1 and NASCAR engines are pathetic WIMPS!
Nitro engines are burning liquid TNT so they aren't regular "engines" really!
Last edited by racer7088; 12-18-2007 at 03:36 AM. Reason: Can't spell!