Quick boost gauge question (ive checked the archives!)
01-10-02, 06:42 AM
#1
Full Member
Thread Starter
Join Date: Oct 2001
Location: UK
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
Quick boost gauge question (ive checked the archives!)
Cant find this in the archives..........
Just installed a boost gauge (SPA) that uses the same nylon hose as the autometer and other gauges, so ive got the same problem - that being its too small to go over the nipple on the inlet manifold. So i used some adapters to take the hose size to 5mm (approx 5/32") and it fits well.
Trouble is i think the boost is reading low (5-3-5 boost pattern) , but my butt dyno says its spot on. Car is quick !!! So my question is that by using the larger hose, have i made the gauge inaccurate ? Since pressure is force x area, i guess ive increased the internal area of the hose ? Ive only used about 2" of it. Has anyone drilled and tapped their inlet manifold specifically for the thin stuff ?
Or am i talking rubbish and its just highlighed a boost leak ?
Thanks
Chris
Just installed a boost gauge (SPA) that uses the same nylon hose as the autometer and other gauges, so ive got the same problem - that being its too small to go over the nipple on the inlet manifold. So i used some adapters to take the hose size to 5mm (approx 5/32") and it fits well.
Trouble is i think the boost is reading low (5-3-5 boost pattern) , but my butt dyno says its spot on. Car is quick !!! So my question is that by using the larger hose, have i made the gauge inaccurate ? Since pressure is force x area, i guess ive increased the internal area of the hose ? Ive only used about 2" of it. Has anyone drilled and tapped their inlet manifold specifically for the thin stuff ?
Or am i talking rubbish and its just highlighed a boost leak ?
Thanks
Chris
