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pumba3800
P Plater
15 Posts
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 Posted - 14 Sep 2006 : 9:40:52 PM
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Hey peoplez, I have a motor I want to swap into my vns1 exec(3.8 S1 160k k`s,auto)and im writing up a list of things to replace,anything you could add that ive overlooked would be great, sofar i have this.
thermostat + housing
power steering pump
waterpump
Welshplugs!!
most sensors
timing chain and tensioner(source of that rattle??)
gear drive?
engine mounts
most hoses that need replacing
also pulling off the intake manifold for a cleanup and a coat of hightemp paint aswell as some other things, and changing every gasket i can(which goes without saying :))
Thanks
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mouce
National Driver
1525 Posts
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Posted - 15 Sep 2006 : 12:09:38 AM
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Welcome to the club, hope to see you around for a while, we're all here to help with just about anything and everything to do with VN commodores.
When you say you're doing an engine swap, I assume that you're taking a S1 out and you're going to put an S1 in. If that's the case then it's just a straight swap. If you're going to be fixing up the motor, then...
A full rebuild wouldn't be a bad thing (160,000km is only a baby still, but it wouldn't hurt)...
If the full rebuild is a bit extreme, then a full set of gaskets and seals (especially the sump, rear-main, and timing cover gaskets).
As for the sensors, the detonation sensor, the O2 sensor, and crank-angle sensor, and the Coolant temperature sensors would be the main ones to change. All the other ones can be reached fairly easily when the engine is in place.
A full set of hoses (cooling system, vac hoses and power-steering) also helps.
While the engine is out (and in pieces), port/polish the heads. The heads can REALLY be improved by a little polishing, you'll be surprised by it.
Other than that, I think you've got everything well sorted...when it's all out, and you're doing the gaskets, don't forget to give the oil pick-up in the sump a good cleaning, otherwise you'll be in there doing it all over again really soon.
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Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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pumba3800
P Plater
15 Posts
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Posted - 06 Oct 2006 : 10:10:17 PM
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well a bit of an update.
with most stuff done minus the rear main seal and the thermostat(i want to flush it first),its nearly on its way in,so my next question is what should i expect to pay to get someone to put this in for me with the gearbox connected?
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mouce
National Driver
1525 Posts
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Posted - 18 Oct 2006 : 8:42:55 PM
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Well done on getting pretty much everything done. Did you do it all yourself or get some help for some of it?
Anyway...physically putting the engine into the car isn't going to be any harder than taking the old one out. Assuming you can do that yourself then that would be nice and cheap ;) Otherwise most larger workshops will have an engine crane that they can use to do the engine swap.
Hooking up the gearbox won't be too hard either. So long as you're just using the same box then there's no need to remove it, just the engine. Call around and get a few quotes on it, I can tell you a few places in Melbourne that can do it, but that's not much help to you ;)
What plans have you got for the old engine?
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Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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Car Probs
P Plater
19 Posts
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Posted - 26 Oct 2006 : 10:18:11 AM
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Hi is there anything i should know about replacing a Vn
series1 with a VP series2 engine? The wiring loom seems the same but im not sure about the computer or where its located?? Thanks |
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mouce
National Driver
1525 Posts
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Posted - 26 Oct 2006 : 7:39:17 PM
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Computer is the same, it's not a problem as far as I know. If you're interested it's located behind the kick panel in the passengers seat foot-well.
The memcal might be different, in fact I'll bet that it is. But it should still run fairly well. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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VNSVLE
Forum Moderator
1316 Posts
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Posted - 26 Oct 2006 : 9:01:20 PM
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| Just have a question if anyone has noticed that in the VN's the manual and the auto crank are different in how the flex plate/flywheel bolt on?? Also the cam and the computer I have heard are different. The cam has a different torque range and the computer is slightly different in the programing. Please correct me iff i am wrong about the cam and computer but i know for sure about the crank as i have run into some problems with this matter. |
What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared. |
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Car Probs
P Plater
19 Posts
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Posted - 27 Oct 2006 : 10:05:39 AM
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| Thanks heaps Mouce my husband and i were both out of places to look you are a genuine help!!! Thanks again |
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mouce
National Driver
1525 Posts
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Posted - 27 Oct 2006 : 10:26:12 AM
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Computer is exactly the same in the VN manual and Auto, as is the cam. There is a difference in the number of bolts on the end of the crank on the S1 engine as far as I know, but for the S2 motor it's the same for both Auto and Manual.
The reason the computer can be the same is that the auto is cable controlled rather than electronically...the VN and VP have kickdown cables at the throttle plate. The VR and onwards doesn't because it's an electronically controlled automatic. The computer tells it when to shift down in the VR.
I believe (and I could be wrong on this) that the cam in the S1 is slightly more agressive than that in the S2. GMHA dumbed it down after many complaints of too much wheel spin in the wet. It has not reduced the power or torque outputs (in fact I think that power is 2kw higher in the S2), HOWEVER, in the S2 the peak torque and power has been shifted higher in the rev range. This isn't due only to the possibly different cam, there were some other changes made. In terms of performance both engines are fairly equal once moving, however the S1 will normally get you off the line quicker (assuming you don't just sit there with the wheels spinning).
The computer programming was indeed different as the VN model run continued, to date, I've come across almost a dozen different engine tunes for the memcal. From the first VN produced GMHA were trying to 'refine' the old Buick V6, they did manage to do a good job, but there are a LOT of different engine tunes out there. At the moment I'm working my way through them all, cherry-picking the best bits trying to make a really smooth AND powerful tune for the engine. I've been working on it for a few months now, but it's all getting there slowly. For all that there were some differences, there were no differences between the auto and the manual memcal, the same computer and the same chips were used in each. |
Bite off more than you can chew, and chew like hell - Peter Brock (1945-2006) |
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