curtis
Well-known member
I had an HKS ssqv on the car before I became a JSB... before that I had two stock ones and before that a stock crushed one. Since then I've ended up with 3 or 4 HKS ones and sold all of them. I've actually decided I'll either go back to two HKS ones or two of the synchroic ones. They do react faster. My big problem with all out there now is size. Yes there's the tial's but I've had friends that had problems with those even running speed density. They would lift of the seat and location on the tube also effects them. I know the mustang guys run some huge nasty ones and actually I think bigger is better. Even the hks sounded like the air was still crashing back against the wheel like it couldn't vent fast enough. Problem with most of these they were designed when a big turbo was a 16G or the all mighty 20g. The companies I believe never thought there would be people using 1000+cfm turbos on 2 liter motors. I have seen some BOV's that discharge radially where as the body of the unit twists around and open windows for the air to escape but this type couldn't easily be vented back in and I'm a fan of doing this.
But I found a odd ball other day with a blower I picked up. Its a bypass valve from a mazda millenia s. They come with a 1.2 whipple blower that hits at 2.2 bar on the compressor map. The valve is 38mm and hook up would be simple enough just cut two flanges and I'm done. It has a bunch of vacuum ports that could be plugged and I'll have to look again but I think it has a vacuum port on the underside of the diaphragm as well as on top. Need to measure the opening tomorrow with a vacuum pump because I already scheduled it, the intercoolers, plenum etc to run on ebay and end 15 minutes after the blower. Anyway here's a picture just wondered if anyone has ever used one. I personally had never even seen one. I'm thinking spring pressure is up around 15psi or so because you can barely squeeze the valve in off the seat with my thumb.
Also found a guy building a miata with two of these twin screw blowers while doing research. Fit and finish isn't the best in the world and I really don't think JB weld is good for 32 psi but he's getting there. Click me
But I found a odd ball other day with a blower I picked up. Its a bypass valve from a mazda millenia s. They come with a 1.2 whipple blower that hits at 2.2 bar on the compressor map. The valve is 38mm and hook up would be simple enough just cut two flanges and I'm done. It has a bunch of vacuum ports that could be plugged and I'll have to look again but I think it has a vacuum port on the underside of the diaphragm as well as on top. Need to measure the opening tomorrow with a vacuum pump because I already scheduled it, the intercoolers, plenum etc to run on ebay and end 15 minutes after the blower. Anyway here's a picture just wondered if anyone has ever used one. I personally had never even seen one. I'm thinking spring pressure is up around 15psi or so because you can barely squeeze the valve in off the seat with my thumb.
Also found a guy building a miata with two of these twin screw blowers while doing research. Fit and finish isn't the best in the world and I really don't think JB weld is good for 32 psi but he's getting there. Click me