02SilverSiHB
05-04-2004, 07:00 PM
:D yeah more boost.
I bought a stock jrsc pulley off a guy that had it for the type s. It's 4.0" versus the 4.4" pulley that the Si comes with on the jrsc.
I didn't think it would add much more boost.
With the stock one for the si, it usually reads 4lbs right away, then gradually 5lbs, then near the end just before shifting, it reads 6lbs.
But now with the type s jrsc pulley, it reads 5lbs right away, with barely even pushing that far on the throttle. then smash it and it reads 6lbs, then nears 7lbs, and just before redline it reads 8lbs! Crazy, I didn't expect that. The a/f ratio on the meter has changed a little.
With the stock jrsc si pulley, the a/f was usually in the rich area during the higher rpms, but read really rich in the lower rpms. Now with this jrsc type s pulley, it reads at stoich the whole time near higher rpms, but at lower rpms, it reads a tad rich like before. It seems the jr power card does better than I expected...it keeps surprising me.
I don't hear any pinging at all and it pulls a lot better. But, the idler screw has to be alll the way down to get enough tension, it seems fine as I drove around like crazy to make sure the belt doesn't come off.
I'm going to put the stock one back on though, I don't want to chance it. I'll wait until about next Friday, hopefully, go a few hours south to San Antonio, and get a dyno and a/f read out using both pulleys. I'll get two with the stock one, then two with the type s one.
Also, when I hit the track, I'll see if it helps any. I does pull harder, but in first, I have to fluctuate with the throttle more when the type s pulley is on. If not, I just spin out too much to where I can't get the added power to the ground, kinda sucks. 2nd gear spins a bit more also.
Anyway, here's some pics
Here's the new pulley, can barely read the 4.0" etched in there
http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMzgxOTkxNnM0MTNkZmQzMXk1NDE%3D
As you can see here, the idler screw is allll the way down.
http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMzgxOTkwNnM0MTNkZmQzMXk1NDE%3D
I bought a stock jrsc pulley off a guy that had it for the type s. It's 4.0" versus the 4.4" pulley that the Si comes with on the jrsc.
I didn't think it would add much more boost.
With the stock one for the si, it usually reads 4lbs right away, then gradually 5lbs, then near the end just before shifting, it reads 6lbs.
But now with the type s jrsc pulley, it reads 5lbs right away, with barely even pushing that far on the throttle. then smash it and it reads 6lbs, then nears 7lbs, and just before redline it reads 8lbs! Crazy, I didn't expect that. The a/f ratio on the meter has changed a little.
With the stock jrsc si pulley, the a/f was usually in the rich area during the higher rpms, but read really rich in the lower rpms. Now with this jrsc type s pulley, it reads at stoich the whole time near higher rpms, but at lower rpms, it reads a tad rich like before. It seems the jr power card does better than I expected...it keeps surprising me.
I don't hear any pinging at all and it pulls a lot better. But, the idler screw has to be alll the way down to get enough tension, it seems fine as I drove around like crazy to make sure the belt doesn't come off.
I'm going to put the stock one back on though, I don't want to chance it. I'll wait until about next Friday, hopefully, go a few hours south to San Antonio, and get a dyno and a/f read out using both pulleys. I'll get two with the stock one, then two with the type s one.
Also, when I hit the track, I'll see if it helps any. I does pull harder, but in first, I have to fluctuate with the throttle more when the type s pulley is on. If not, I just spin out too much to where I can't get the added power to the ground, kinda sucks. 2nd gear spins a bit more also.
Anyway, here's some pics
Here's the new pulley, can barely read the 4.0" etched in there
http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMzgxOTkxNnM0MTNkZmQzMXk1NDE%3D
As you can see here, the idler screw is allll the way down.
http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMzgxOTkwNnM0MTNkZmQzMXk1NDE%3D