No, oil lowers the octane rating. Octane refers to a fuel's antiknock characteristics. The fact that oil lowers the octane rating of gasoline is an established fact.

Draw through is the only way to run with a roots blower anyway.

 

Lol, wtf, probably not, he has a bypass valve as well as a bov, he posted a vid of himself driving by probably at about 60mph and it wasnt screaming like a banshee, wtf...

 

yea it sounded fine to me in the video

 

zbrown says:
>>The one bypass valve i have cant vent the excess pressure fast enough at high rpm shifts but it works perfect at idle.

And this is my point - there's really too much air to vent off for any serious application. As long as you aren't really moving any air volume, you can "sort of" make it work....
If this guy had a blower capable of producing any actual horsepower, the setup would never work right. Does he have any idea how much head pressure the system is building up?
Sure, you can do a massive rig job and get something to sort of work at low power levels, if you are willing to accept the the limitations (ie getting the bypass valve to cut in and out when it really should, not being able make any real power, etc).
There is a good reason why roots blowers (or any other positive displacement type) are installed _downstream_ of the throttle.

BTW, DEZERTE - your avatar makes you look like a desperate wanking perv

 

I think Zbrown did a good job with the fabbing but I definately would have set up the M90 the way it was on the Supercoupe, plus an FMU and water injection.

 

Don't let your childlike attitude go to your head. I can just as easily question your intelligence too but I am too big of a person to do so and I actually have class.

Zbrown is using a very small bov and needs to upgrade this. He knows this. Since you didn't read enough of the thread to formulate a good argument, here is what you are missing. He also has a bypass valve in addition to the bov. The bypass valve takes care of any issues with air building up in front of the throttleplate at part to no throttle. Even if it didn't, a larger one could. It's not as complicated as you are making it out to be. Roots blowers have typically always been installed downstream of the throttle because this has the least amount of issues to overcome. They were around long before fuel injection. Turbos used to also be placed after the carb. Why don't we do that any more? There are advantages and disadvantages to ANY scenario. Making them work by overcoming any issues is something that has to be thought out. There is always one single best way to do it for any application. It doesn't mean others can't be made to work though. This setup "can" work though. It doesn't mean that his exact setup is the "best" way to do it though.

Don't insult other people's avatars. It makes you look like a tool. Questioning other people's intelligence when you are the one without the facts straight doesn't help either.

 

Wow, you're an idiot.

 

i quoted you. if you're not sure what you meant, who is?

 

Childlike? Not likely. The only one losing his cool here would be you.

I sure did read that part. Any no size blow off or bypass valve will ever make that system run like a proper draw through system.

No, a larger vavle will not solve the problem.

Here - read this thread:
https://www.rx7club.com/showthread.p...ighlight=eaton

This would be where you are wrong sir. Look at ANY original equipment supercharger. All are draw through setups for the reasons mention in the above link.

There is a world of difference between "working at all" and "workeing correctly" in a generally accepted way.

It was not an insult - only a comment. I am entitled to an opinion.

You are the one whose facts are not straight. I have read many of your verbose posts on various boards, and see that most of the time, you know what you are talking about. This isn't one of them. You do not seem to understand when you do not know what you are talking about.

Again, I will tell you to read the link above.

I read an article once about a guy who turbocharged his Chevy. No wastegate - his boost control was with a radiator cap. Hey - why not? It "worked" for him! (Still not as hokey as the zbrown system) We who pay $500+ for a wastegate must be complete idiots when a radiator cap works just as well. See the flaw here?

I've seen hack jobs in my life, but Christ people - if you're going to do all that fabrication, go the extra mile and do it right.

Honestly, I could care less what you boys do to your cars. Want to do a braindead SC install? Have fun! But handing out blatant misinformation is not acceptable, rotarygod.

 

See this link:

https://www.rx7club.com/showthread.p...ighlight=eaton

I tried here to explain clearly why zbrown's setup is not a good idea, and point out that every single factory roots supercharged system is a draw through, as are all kits.
Pay no attention to rotarygod's temper tantrum. He doesn't like being corrected on things he does not understand.

 

Its times like this that I wish i was a mod.

 

No, you're getting confused again. Sometimes I don't use the "quote" featuire - I just throw in a ">>" in front of the quoted part.

 

Why don't you pick up a copy of "Turbochargers" by Hugh MacInnes, or something and learn a little?

I get tired of trying to explain this stuff to you kids. Am I the only one in this thread with any actual experience in this area?

Sorry to burst your bubble and shatter your dreams of cheap supercharging, but that system is seriously flawed. Spend a few extra bucks, make it a draw through, and have it work right.

 

go back and reread page 2.

 

.

 

You $#%#$ #$%###, this isnt even my thread, nor did i say what im doing in this thread. And i CERTAINLY didnt ask for your STUPID opinion or your retarded comments or help.

 

Original phrase from the thread originator was something like "rotaries are prone to detonation, especially forced induction".
This implies that all rotaries are prone to detonation, moreso with FI added. The first part of this statement is incorrect. Do you want references cited?

 

Never said it was... You showed up trying to tell me I don't know what I'm talking about, and I showed that you were wrong. Settle down.
Is this little outburst contributing anything whatsoever to the thread? No. And I don't post here for your own personal benefit. It all started when I foolishly tried to correct someone.

 

Looks to me like you were adressing me, since you quoted me at the top of your post.
What the hell?

 

first of all the guy who said that didnt start the thread, thus he's not the originator.

B. he said "rotaries are prone to detonation, especially forced induction". and then YOU said ABSOLUTELY NOT

i responded to YOU saying that with a SUPERCHARGER its no longer na.

then you told me to read it again, because the part that i am NOT RESPONDING TO isnt clear to someone.

then you said i was confused again, when i wasnt confused before.

so i told you to reread the whole thing.....

 

 

Lets just close this, since people can't be civil and discuss this thread properly

 

Me too... oh, wait a minute, I AM...

Ok folks... let's keep it civil in here!

Brad

 

However, I will be more then happy to dispense warnings...Doing so now.