Tyler_Krupa
New member
- Joined
- Dec 7, 2012
- Location
- Southern N.H.
So I just went to the drags for the first time with my 940 and saying I'm disappointing is a little bit of an under statement.
My best slip out of the 3 I had time for was
R/T .293
60' 2.946
330 7.562
1/8 11.261@66.97
1000' 14.456
1/4 17.170 @ 83.56
I know I should be much faster than this. I tried one time with 2 step and once with brake boosting and those times were 17.197 and 17.226 respectively.
So far I have for performance mods,
15g flat flange
ported 90+
GFB electronic boost controller which is set to a duty cycle of 70 which is around 16psi with my wastegate
RSI stage 1 cam (1st gen)
Nuke cam gear set to 2 degrees advanced
TLAO Chips
Buchka Spark
3" downpipe to OBX 2.5" exhaust (no cat)
Accumulator mod
94 940 NA rear axle 4.10 in a 1041
So what I'm wondering is what should I take a look at that might be the problem. There is another street night Wednesday which I will be going to assuming I fix something.
So you don't have to read everything so far I have:
Pressure tested IC iping (no leaks)
Pressure tested whole intake (air leaking out charcoal canister lines, replaced and ziptied)
Verified timing belt was installed properly
Shimmed WG to make 8psi (had no pretension and only made 5psi)
Compression check (cyl1:140 cyl2:145 cyl3:150 cyl4:165)
Replaced blown out felpro exhaust manifold gaskets with elrings
Cleaned airfilter and MAF
Checked spark plug gaps and adjusted all to .28 (was .34)
Changed Diff fluid
Fixed valve lash, 2 intake were too loose and one exhaust was too tight.
Replaced crank position sensor with known good (was a little melted with exposed wires)
Replaced brake booster hose(had small cracks)
My best slip out of the 3 I had time for was
R/T .293
60' 2.946
330 7.562
1/8 11.261@66.97
1000' 14.456
1/4 17.170 @ 83.56
I know I should be much faster than this. I tried one time with 2 step and once with brake boosting and those times were 17.197 and 17.226 respectively.
So far I have for performance mods,
15g flat flange
ported 90+
GFB electronic boost controller which is set to a duty cycle of 70 which is around 16psi with my wastegate
RSI stage 1 cam (1st gen)
Nuke cam gear set to 2 degrees advanced
TLAO Chips
Buchka Spark
3" downpipe to OBX 2.5" exhaust (no cat)
Accumulator mod
94 940 NA rear axle 4.10 in a 1041
So what I'm wondering is what should I take a look at that might be the problem. There is another street night Wednesday which I will be going to assuming I fix something.
So you don't have to read everything so far I have:
Pressure tested IC iping (no leaks)
Pressure tested whole intake (air leaking out charcoal canister lines, replaced and ziptied)
Verified timing belt was installed properly
Shimmed WG to make 8psi (had no pretension and only made 5psi)
Compression check (cyl1:140 cyl2:145 cyl3:150 cyl4:165)
Replaced blown out felpro exhaust manifold gaskets with elrings
Cleaned airfilter and MAF
Checked spark plug gaps and adjusted all to .28 (was .34)
Changed Diff fluid
Fixed valve lash, 2 intake were too loose and one exhaust was too tight.
Replaced crank position sensor with known good (was a little melted with exposed wires)
Replaced brake booster hose(had small cracks)
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