Vacuum Bypass

[Al1exx]

Hello everyone, I'm new to the board having just bought a second hand JRSC.

I'm going to install it on my motor but don't want it to boost just now. That's 'cause I'm going to buy a Zdyne to go with it and not use the other methods of controlling fuelling / ignition that came with the kit.
My question is, running without the belt, I know the bypass will open on vacuum and thus everything will work fine, but driving about at *no* vacuum, I'm worried the bypass will close off? So, should I zip tie the vacuum bypass open for the time being? It won't be for long, probably weeks rather than months.

Thanks for any advice you can give me.

Alex

[Al1exx]

Thanks bud that's what I thought, but my worry is that, at zero vacuum, the bypass will close & force air through the Supercharger?
I know this will not generate boost but won't the charger, since it isn't moving, just act like a big restriction? I was thinking that the charger will almost be airtight when it isn't turning & so it'll choke off my engine?
Or am I just thinking about this all wrong?
Thanks again,
[img]smile.gif[/img]
Alex

[blownLS]

Your engine will begin sucking air through your charger instead of the charger blowing air into the engine. My belt spun off a couple of times and the charger would spin freely and then faster with higher rpms. yes I am sure there is some restriction, but it doesn't hurt anything. I know we all hate them, but Moss motors told me personally it would NOT hurt anything but horsepower...

[HoustonSi]

no belt = no boost, so you will be fine.

[Al1exx]

So it'll just act like a slight restriction? Great, that's exactly what I was hoping!
Just need to press on with the install now.
Thanks for your reply!
[img]smile.gif[/img]
Alex

[gsrteggie]

hahahah slight restriction... hahahaha

sorry, anyways.....
I had a belt spun on the dyno due to improper tension.

THe great dyno figure with no belt? 126 hp (and change, they shut it down a tad early.) torque was still better, oddly enough

before jrsc hp = 156 no jrsc belt = 126

30 hp restriction give or take. you'll lose 20 hp minimum with it running through the charger.