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| Author: | Bren67Cuda904 [ Thu Jun 14, 2007 9:24 pm ] |
| Post subject: | Re: The numbers check-out... |
Quote: Quote: ... Short of buying another new compression tester of a different brand, the 230psi is very likely correct...
Borrow another compression gauge, run another cylinder pressure check.Your numbers all work, the math does not lie. (I still can't get over the 3.591 bore size but that's my problem) I don't see how this combo can get 230 psi cranking, it's not "adding-up", my guess is that your dish measurement is off. I looked at this 2 ways, first I used my "dream wheel". 3.91 x 4.250 does get 258+ CID and compression ratios for "final" chamber size as follows: 8 to 1 @ 100+cc 9 to 1 @ 88 cc 10 to 1 @ 78 cc 11 to 1 at 70.5 cc 12 to 1 at 64 cc Then the calculator: Sweep volume for a single cylinder = 705 cc Final chamber size = 77 cc 705 / 77 = 9.1558 static C/R Based on the numbers you gave us, I think you can get this engine to run sweet on 91 pump gas. The dyno numbers seem to support a 9 to 1 engine. DD |
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| Author: | SlantSixDan [ Thu Jun 14, 2007 9:25 pm ] |
| Post subject: | Re: brens car |
Quote: Have you ever watched Who Wants to be an Millionaire? I have never seen the oddience poll be wrong
Clue: TV isn't real life.
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| Author: | Blown 70 [ Thu Jun 14, 2007 9:31 pm ] |
| Post subject: | |
Brennan.......Who wants to be a millionaire !!!!! Classic !!!!!! That is some funny $#!+ !!!!! Sad but true boys. :lol: |
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| Author: | Bren67Cuda904 [ Thu Jun 14, 2007 9:32 pm ] |
| Post subject: | Re: brens car |
Quote: Quote: Have you ever watched Who Wants to be an Millionaire? I have never seen the oddience poll be wrong
Clue: TV isn't real life. |
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| Author: | slantzilla [ Thu Jun 14, 2007 9:42 pm ] |
| Post subject: | Re: The numbers check-out... |
Quote: Based on the numbers, I think you can get this engine to run sweet on 91 pump gas. The dyno numbers seem to support a 9 to 1 engine.
Doc thinks 7 in works.[/quote]DD I love Doug like a brother, but his calculator is on crack. His calculator says my motor is at 8.7-1. Not happening in this lifetime. 
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| Author: | SlantSixDan [ Thu Jun 14, 2007 9:56 pm ] |
| Post subject: | Re: brens car |
Quote: I smell a conspiracy. Your right they mess with the results to make them look smarter. Why? What am I asking you for? I thought you never watch T.V.?
And you've just reiterated the reason. Nicely done.Another clue: your sockpuppets will be more believable when "their" posts don't contain all your same idiosyncrasies of language, spelling, punctuation, and, erm, grammar. |
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| Author: | sandy in BC [ Thu Jun 14, 2007 9:57 pm ] |
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CR is now set to 10.4 Deck height .007 in hole (took about .030 to get there) head is 65cc and .006 off it to clean it up. 8 to 1 @ 100+cc 9 to 1 @ 88 cc 10 to 1 @ 78 cc 11 to 1 at 70.5 cc 12 to 1 at 64 cc no further comment on Compression Ratios. |
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| Author: | slantzilla [ Thu Jun 14, 2007 10:47 pm ] |
| Post subject: | |
Quote: CR is now set to 10.4
I din wanna be the one to point that out Sandy. Deck height .007 in hole (took about .030 to get there) head is 65cc and .006 off it to clean it up. 8 to 1 @ 100+cc 9 to 1 @ 88 cc 10 to 1 @ 78 cc 11 to 1 at 70.5 cc 12 to 1 at 64 cc no further comment on Compression Ratios. 
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| Author: | Doctor Dodge [ Thu Jun 14, 2007 10:58 pm ] |
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Quote: Doc thinks 7 in works.
.007 "in the hole" does not mean squat when you have a dished piston.I worked with the numbers we were given, the big bore and additional stroke gives a good amount of additional "sweep volume". As I stated in my post, something is not "adding up" with this combo, I really don't see how you can get 230 psi cranking out of the set-up discribed. I think the piston dish volume we were given is suspect. As seen by the listed chart, it does not take a lot of reduction in the final chamber size to really jack-up the static (and cranking) compression ratio. DD |
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| Author: | Bren67Cuda904 [ Thu Jun 14, 2007 11:25 pm ] |
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http://www.renaissanceracing.com/images ... iston1.JPG http://www.renaissanceracing.com/images ... iston4.JPG If you where to guess how many CC's the valve releifs added, what would your guess be? The piston manufacture told us and these numbers where used, but I no longer remember. I also used this calculator. http://users.erols.com/dmapes/DISPCLC.HTM |
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| Author: | Sam Powell [ Fri Jun 15, 2007 4:59 am ] |
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This was a facinating thread, but one that kind of got out of hand. In my opinion there were too many personal comments about the IQ and heritage of other posters, and in my opinnion, that is not constructive, or helpful to anybody. Angry, vengeful, personal responses are about a 15 minute high at best, which then leave a trail for all to read, of hostility, intolerance, and bitterness. I want to go where people or positive, sharng, caring, clever, ingenious, creative, persistant, inclusive, happy, and uplifting.I want to go where people are not threatened by other's successes, and where enjoy joining up with others. Life is too short to do otherwise. These feelings I listed above are those associated with good, general health. I am of an age where I want to stretch my senior years out as long as possible. This car gives me a real strong uplift in my mood every day. I really don;t want to come on the forum and be brought down. I feel there should be room on this forum for all opinions, as long as they are expressed with some considerations for other's feelings, and in a gentlemanly fashion. The irony here is that earlier in this very thread I submitted a post praising the slantsix forum for being the home of such intelligent, generous, creative, guys. I sold my Corvette, and commited myself to the slant, in part, because the Corvette forum was full of threads like this every day. It got really tiresome. So go ahead and vent, but some people will leave as a result, and I for one, don;t think that is a good thing. We will end up with a smaller, and smaller group of guys; that being the ones who relish in the dog fight, and tune in just to take part in one. Sam |
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| Author: | CARS [ Fri Jun 15, 2007 7:20 am ] |
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Nicely said Sam. I've been around here for a year and never saw anything like this before. I feel sorry for someone who reads this thread in the future thinking he is going to get info on an engine combo. Not for the info on the engine. That speaks for its self, you need to spend time to get any combo working. But for the true colors of some of the moderators and gurus of the /6 forum. With that being said... David you need to develop patcience if you want to optomize any engine. Your comment on the BBD measage board about how you could have built 3 big blocks for what you spent on the slant is absolutly unrealistic. If you do every mod to a 440 that you did to your slant you will still have stuck alot of money into something that you will have to tune anyway. Don't give up yet, take the advise given and get to work!!! No one ever said that doing something different was cheap or easy!! |
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| Author: | Bren67Cuda904 [ Fri Jun 15, 2007 8:41 am ] |
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Quote: Quote: Wow..some of these posts are kinda harsh....Ive been lurking here for some time and following this build for info and insight on how to make a slant
Hi there. If you're trying to gain insight on how to build a slant that works, you've been following the wrong build, and I'm not sure why the numerous posts in each and every one of Bren's threads saying "No, wrong, stop, wait, don't, that won't work well, this isn't cost-effective, that's not how this works," etc., didn't tip you off to that fact. You are out of line suddenly appearing on here and preaching a sermon about how we're being too harsh and should lighten up. You haven't got the facts, you weren't involved, and you have no standing to denounce anyone on here this late in this game.posts in each and every one of Bren's threads saying "No, wrong, stop, wait, don't, that won't work well, this isn't cost-effective, that's not how this works," etc., This statement is complete fiction. I have been very open to what has been recommended as long as it makes sence for the street. I also like to wait to see if the general trend or conscensus if leaning more one way than the other. In most cases it has gone of in all direction. I will not tear down a motor with out a plan. I will not just willy nilly follow all directions recommended at my own expense. Keep in mind your not paying for it. If half the field could agree we would be getting somewhere and thats even ignoring the known dumb asses here. I once was slammed for suggesting that the posts be read more clearly. I still think people need to and stop making up things out of thin air. Quote: Quote: I don't know how fast it was but with the front shocks removed, you could come to a stop and while the nose rebounded, hit the gas and it would pull and hold the left front tire for about 15-20 feet as witnessed by friends looking on.
Bren, I was honestly refraining from saying this for months, but that quote right there proves beyond the shadow of a doubt that you are indeed an idiot. People have been trying to help you for months and you only want to hear what you want to hear. I really don't care who measured it, one thing I know for sure is that a big bore motor with the pistons only 7 down the hole will be waaaaayyyyyy over 10-1. You spend big bucks on the build, put in too small a cam, too tight a converter, not enough gear, and then hang A/C on top of it and now you give up.  I 'd be already gone if it where for the few great guys here with something to offer. I don't want to leave and have fiction spewed about this engine or me. The fact that some, as you say, NOOBs will come looking for information and have a skewed picture. I too think the slant 6 is a great engine, but it will shortly no longer be for me. |
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| Author: | MenkeMoose [ Fri Jun 15, 2007 9:45 am ] |
| Post subject: | |
Bren, there has been a lot of interest here in your build and your car. I've been a member here for a long time and have read nearly every post since I joined. It seems like every other week someone is asking about how to build a better /6, but rarely does anyone back it up with the necessary money or follow through. ...And it's even more rare to get dyno tests, etc. When the gang here saw that you were actually doing something, they jumped in full force to help. Several of the people who've given advice are quite experts, and their time professionally would be very expensive. It isn't just the time taken to type the post either, there are hours spent contemplating the issue, researching and calculating. These people have now also made an investment in your project that would have cost you hundreds of dollars if you hired a consultant. They will now lose their investment along with you losing yours. So, it is important to understand the frustration of your stake holders, even as small as their investment is as compared to yours. If you ask five engineers how to best build a bridge you'll get five different anwers. It's the same with building engines and cars. Your best bet is to read enough through the forums to know who's answers you think you can rely on most. I'm no automotive expert, but the common theme here is that there is a problem with your engine build, and you've given up on this project as if to blame the slant six. Read the history of Jack clifford, and you will see that 6 can equal 8 on the race track. You get kudos for your initial willingness and investment to "do what it takes". I just wish you had the confidence and wearwithall to see it through. I drive a classic 5 ton motorhome powered by a /6. A number of people have converted theirs to a V8. They'll beat me going up a hill, but when we get to our destination, there will be many more people interested in how the little slant six can power this beast. I'll also have more gas in my tank. You could have had a car that would go fast, turn heads, and be truly unique. One that people will want to hear about - especially your trials and tribulations of getting it there. Now you'll just have another old car. Thanks to all for an interesting thread while it lasted. -Moose |
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| Author: | DionR [ Fri Jun 15, 2007 10:15 am ] |
| Post subject: | |
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