Built Series 1, have lots of KR
#1
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2009
Location: Nebraska
Posts: 115
Likes: 0
Received 0 Likes
on
0 Posts
Built Series 1, have lots of KR
I just got finished putting in y engine ive been doctoring up, I picked up a 95 Olds 88 supercharged engine for $300 with 150k on it, tore it down, new bearings, had the heads ported and opened up, new valve stem seals, new valve springs, all the gaskets replaced, ported intake manifold, cat delete, 180 therm, autolite 104 plugs, all repainted black and white, It runs great fired right off when we got to start it, but when driving it, it has no power at all, hooked up my scan tool and im getting up to 25-28 degrees of KR. What can I do now? Im running 93 octane,
its in a 1993 Park ave ultra, the block is a 95 with a 93 blower (stock pulley size) and 93 sensors
its in a 1993 Park ave ultra, the block is a 95 with a 93 blower (stock pulley size) and 93 sensors
#3
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2009
Location: Nebraska
Posts: 115
Likes: 0
Received 0 Likes
on
0 Posts
It seems to come and go, I drove it again nicely last night and sometimes it will throw tons of KR, other times none and it will SCOOOOOT
impressed my passenger with it when it actually took off
I have already done all the supporting things to it to prevent KR, my old stock engine had 0-1 KR all day long which wasn't a big deal
maybe im running lean under boost?
impressed my passenger with it when it actually took off
I have already done all the supporting things to it to prevent KR, my old stock engine had 0-1 KR all day long which wasn't a big deal
maybe im running lean under boost?
#4
Retired
Your going to have to find out what mod you did before getting all that KR.
__________________
Retired Administrator
Retired Administrator
#6
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2009
Location: Nebraska
Posts: 115
Likes: 0
Received 0 Likes
on
0 Posts
Update, hooked up my fuel pressure gauge, runs 35 ish at idle and around 52-53 at WOT with the regulator hooked up.
All that is done to it is ported heads and intake otherwise its stock (supercharger is stock with stock pulley) still is throwing crazy amounts of knock, but if I romp on it from a 32-35 mph roll it doesn't throw any, from a dead stop or a slow moving roll I get upwards of 30 degrees?? I put $20 of race gas (100 octane) in it and same thing, pulled off supercharger belt and then had no KR (also no power )
what does this tell you guys
My o2 sensor is working, fuel trim seemed ok, had my ase mechanic uncle whom I work with look at it and verified that everything seems to be in spec, im wondering if my intake port is to blame, my uncle did the heads, I did the intake, I wonder if I left some sharp ridges on it, the heads looked and felt incredibly smooth and he mostly worked on the exhaust side.
All that is done to it is ported heads and intake otherwise its stock (supercharger is stock with stock pulley) still is throwing crazy amounts of knock, but if I romp on it from a 32-35 mph roll it doesn't throw any, from a dead stop or a slow moving roll I get upwards of 30 degrees?? I put $20 of race gas (100 octane) in it and same thing, pulled off supercharger belt and then had no KR (also no power )
what does this tell you guys
My o2 sensor is working, fuel trim seemed ok, had my ase mechanic uncle whom I work with look at it and verified that everything seems to be in spec, im wondering if my intake port is to blame, my uncle did the heads, I did the intake, I wonder if I left some sharp ridges on it, the heads looked and felt incredibly smooth and he mostly worked on the exhaust side.
#7
Senior Member
True Car Nut
You have to also consider the possibility this is false knock. Are all the bolts in place on the flex plate? Is anything rattling on the exhaust? When you took the belt off the suppercharger did the pulley spin freely with no signs of bearing noise? Are all the heat shields tight and secure?
#8
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2009
Location: Nebraska
Posts: 115
Likes: 0
Received 0 Likes
on
0 Posts
im wondering if it is false knock. My exhaust is 100% trash its old and rattley. i have an appointment tomorrow for an estimate to redo the whole system. TOday while driving the car even at 1/4 throttle it would spike to 25-30 kr on my snap on "brick" scanner.
I will retighten the torque converter bolts tomorrow
I did put a new fuel filter in with no change
I also have noticed a bang when i shift into reverse like possibly a bad trans mount on the rear? the front trans mount and pass side engine mount is new as of last week
I will retighten the torque converter bolts tomorrow
I did put a new fuel filter in with no change
I also have noticed a bang when i shift into reverse like possibly a bad trans mount on the rear? the front trans mount and pass side engine mount is new as of last week
#9
Senior Member
Posts like a 4 Banger
Thread Starter
Join Date: Jul 2009
Location: Nebraska
Posts: 115
Likes: 0
Received 0 Likes
on
0 Posts
UPDATE
now its throwing up into the 20 degrees mark or higher even at 1/4 throttle?? I had it running great for a day then now its even worse? I let my brother drive the car to work and he "brushed" a curb and blew one of my tires but I got that fixed and now its doing this. The only mods are the heads/intake that'* it! Im thinking about switching back to a stock intake to see if that helps? I only have 1 day left until our annual cruise night and track day
now its throwing up into the 20 degrees mark or higher even at 1/4 throttle?? I had it running great for a day then now its even worse? I let my brother drive the car to work and he "brushed" a curb and blew one of my tires but I got that fixed and now its doing this. The only mods are the heads/intake that'* it! Im thinking about switching back to a stock intake to see if that helps? I only have 1 day left until our annual cruise night and track day