Where is this knock coming from?
#1
Senior Member
True Car Nut
Thread Starter
Join Date: Sep 2002
Location: Genoa, Illinois
Posts: 4,013
Likes: 0
Received 0 Likes
on
0 Posts
![Allmachtige is on a distinguished road](https://www.gmforum.com/images/reputation/reputation_pos.gif)
![Default](https://www.gmforum.com/images/icons/icon1.gif)
Sometimes I'll be cruising along at 60mph, punch it, can get maybe .3 KR. Other times I'll punch it can get a moment of insane KR upwards of 12 points!
When this happens I can hear the engine hesitate for a split second as if I tapped the gas once, then floored it a second time, when in reality I just floored it from the get-go.
This has gonna be KR or something is banging. I'm beginning to suspect that oversize waterpump pulley I have is hitting the really close motor mount so I'm gonna get a lightweight stock sized one for the time being, but any other ideas what could cause this? Yes recently I did put in the 3.2" to test her out, but I can't see how going from 3.3 to 3.2 would cause speratic KR spikes.
![Shocked](https://www.gmforum.com/gm/images/smilies/icon_eek.gif)
This has gonna be KR or something is banging. I'm beginning to suspect that oversize waterpump pulley I have is hitting the really close motor mount so I'm gonna get a lightweight stock sized one for the time being, but any other ideas what could cause this? Yes recently I did put in the 3.2" to test her out, but I can't see how going from 3.3 to 3.2 would cause speratic KR spikes.
Thread
Thread Starter
Forum
Replies
Last Post
streetracer
Performance, Brainstorming & Tuning
1
08-18-2003 01:08 PM