I have the vacuum brake conversion on my '86 GN. It does have a check valve in the vacuum line.
When the engine is producing boost I noticed that the brake pedal is very stiff, but when vacuum is available to the booster the brakes work great.
Is there any check valve that might work better than others for blown cars?
When the engine is producing boost I noticed that the brake pedal is very stiff, but when vacuum is available to the booster the brakes work great.
Is there any check valve that might work better than others for blown cars?