Thread: Compressor Surge?

would you recommend a 2 port BOV?

common problem with the greddy type rs bov
on both knock off and original........

What for?

In rare circumstances, maybe. Typically I am not a fan.
Simple, normal BOVs work perfectly in all boost situations and in all normal configurations of recirc or vent. The general design is sound. The only improvement I've ever seen is replacing the diaphragm with a piston. That's about it. Of course if you have a lot of air to flow, two BOVs or a very high flow design might be in order. But the general BOV design is not one easily improved on. It doesn't need variable tension springs. It doesn't need variable/adjustable anything. It certainly doesn't have to be adjusted for different boost levels. It really doesn't even need to be adjusted for different vacuum levels.

If a BOV leaks at any sane pressures, that's a failure of construction and component choice, not general design.

What would be some suggested bovs to go with, I can confirm this is a type rs knock off (by original owner) so I'm just gonna replace it eventually anyway, even if I fix this issue

The go-go cheap, extremely good choice is the 1st generation Diamond Star Motors BOV (1G DSM). It doesn't share the Greddy flange though. It is a bit different. These are cheap, and work well. I use one.

In the mid-price range is high quality Bosch stuff.

After that you're going to spend some serious money. All the normal companies make good choices. I am partial to Tial but Synapse is a huge favorite (the only piston design I know of). Forge makes good ones. JGS is another good choice. There are more, I'm sure I'm missing some good options.

Figured you might be interested in this.

wastegate as a BOV

start @ post 209
Short Runner T4 TS GTX3076R Experiment - Page 3 - evolutionm.net

He got the idea from Projects & Mods - Dejon Tool BOV Leak-Stop

I'm very familiar with Gus Mahon's 1G DSM BOV modification (I was lucky enough to be part of the DSM scene when he was around). It is an elegant/inexpensive solution to a problem that particular BOV should never have had to begin with. If you have a 1G DSM BOV and plan on running over 18 psi that is one band-aid that works. I'd really prefer to see a BOV installed that doesn't leak at those pressures instead.

I'll have to look into the wastegate as BOV thing. Off the top of my head I don't see any issues (other than a wastegate is over-built for the job) but I don't readily see any benefit either.

I have RS and only get surge at 0psi it has to be way soft though

Any chance that there's a decent bov out there that would fit this greddy flange? The time saved removing things and getting a new flange put in would be worth it to me. I was looking at the hks ssqv most recently

Are you saying to adjust it soft, I'm gonna check vacuum line, throw a picture up of where it's coming from, loosen bov if the line looks good, then try the vac pump to make sure it's even working, then replace it if not. But eventually it'll prob replace it regardless