Two More 3.9L Projects Underway @ Shark Werks
#31
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Anything with over 15k miles we recommend doing the bottom end (rod bolts, bearings etc...)
Anything with 35k for sure do the Heads/refresh.
Either way they're going a lot more than cup car 60hour motors:P
Can't wait to see yours
Off to time some cam-shaftalonnies!
#32
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Andrew - I'd let you drive it when it sees track duty later this year, but you may forever be displeased with me for inducing you to take the plunge and reduce the balance in your savings account.
#35
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I'm curious why there are no mods to the intake system on the Sharkwerks 3.9 build? AP indicated that they could only get to 475hp on the RS 4.0 without modifying the intake manifold and airfilters. Manthey upgrades to a carbon intake manifold, carbon airbox and race filters on their K510 build.
Also, neither Sharkwerks or Manthey engine builds appear to reinforce the cam adjusters or chain tensioners, which Porsche saw as necessary on the RS 4.0 to maintain durability.
Also, neither Sharkwerks or Manthey engine builds appear to reinforce the cam adjusters or chain tensioners, which Porsche saw as necessary on the RS 4.0 to maintain durability.
#37
[QUOTE=sharkster;9321526] resurface the intake and exhaust valves and replace the intake and exhaust guides with honing for proper oil clearance, cutting of intake and exhaust seats. One thing you can also do is use manganese bronze guides that will last longer than factory:
[FONT="Comic Sans MS"][COLOR="Blue"]Cameron,,,if I was doing this I would need two motors. One for the car and one for display in these gorgeous steps of reassembly, some in the kitchen, some in the living room, etc. etc. It seems a shame to hide them under the bonnet...pure artwork.[/SIZE]
Good job James, Alex, & Dan
[FONT="Comic Sans MS"][COLOR="Blue"]Cameron,,,if I was doing this I would need two motors. One for the car and one for display in these gorgeous steps of reassembly, some in the kitchen, some in the living room, etc. etc. It seems a shame to hide them under the bonnet...pure artwork.[/SIZE]
Good job James, Alex, & Dan
#38
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I'm curious why there are no mods to the intake system on the Sharkwerks 3.9 build? AP indicated that they could only get to 475hp on the RS 4.0 without modifying the intake manifold and airfilters. Manthey upgrades to a carbon intake manifold, carbon airbox and race filters on their K510 build.
Also, neither Sharkwerks or Manthey engine builds appear to reinforce the cam adjusters or chain tensioners, which Porsche saw as necessary on the RS 4.0 to maintain durability.
Also, neither Sharkwerks or Manthey engine builds appear to reinforce the cam adjusters or chain tensioners, which Porsche saw as necessary on the RS 4.0 to maintain durability.
The airbox is something we did really play with and whilst it's hard to show proper gains and tune for it on dynos (with only 40/60mph simulated airflow) it we did get about 8-10hp from R&D/prototype intake projects. We did find that the design in the 3.8/4.0 cars with the second inlet (borrowed from the Turbo) was a great way to go. The problem is not everyone with a mk1 wants to cut/hack apart their 12k RS wing The tensioners and cam adjusters haven't been an issue on very highly strung, run and mileage cars. If you're thinking about the 3.8 ones which are different to the 3.6 MK1s you mean?
[quote=nct510;9326037]
resurface the intake and exhaust valves and replace the intake and exhaust guides with honing for proper oil clearance, cutting of intake and exhaust seats. One thing you can also do is use manganese bronze guides that will last longer than factory:
[FONT="Comic Sans MS"][COLOR="Blue"]Cameron,,,if I was doing this I would need two motors. One for the car and one for display in these gorgeous steps of reassembly, some in the kitchen, some in the living room, etc. etc. It seems a shame to hide them under the bonnet...pure artwork.[/SIZE]
Good job James, Alex, & Dan
[FONT="Comic Sans MS"][COLOR="Blue"]Cameron,,,if I was doing this I would need two motors. One for the car and one for display in these gorgeous steps of reassembly, some in the kitchen, some in the living room, etc. etc. It seems a shame to hide them under the bonnet...pure artwork.[/SIZE]
Good job James, Alex, & Dan
#39
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Shakster,
Does your 3.9 upgrade run hotter with the steel sleeves oppose to the nica seal (oe)?
Do you keep the factory lifters?
What kind of pistons do you use?
Do you use the same compression?
Ralph
Does your 3.9 upgrade run hotter with the steel sleeves oppose to the nica seal (oe)?
Do you keep the factory lifters?
What kind of pistons do you use?
Do you use the same compression?
Ralph
#40
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Setting up the timing blocks:
Timing the cam shafts:
The intake manifold, wiring harness and all aux. components installed back on the engine:
The transmission is installed with the LWF and clutch upgrade (a Guard LSD is also fitted):
Back into the engine compartment:
All the fluids are put in as well as the intake:
We did say this project was a track car and hence the Shark Werks Track Exhaust is installed:
From the bottom that's now a very nice clean 3.9L engine ready to make some noise!
A look at that 4-Way Ohlins set up:
Two racing seasons later on the RSS links and still going strong!
With her HRE P40 Wheels on she's ready to be broken in:
She'll be off to TC Design for one of their slick roll cages as well as coming back for a factory RS tail:
And now James is focusing on our FLorida 3.9 car... A nice twist with this one is some suspension work too:P More on that as we go...
Timing the cam shafts:
The intake manifold, wiring harness and all aux. components installed back on the engine:
The transmission is installed with the LWF and clutch upgrade (a Guard LSD is also fitted):
Back into the engine compartment:
All the fluids are put in as well as the intake:
We did say this project was a track car and hence the Shark Werks Track Exhaust is installed:
From the bottom that's now a very nice clean 3.9L engine ready to make some noise!
A look at that 4-Way Ohlins set up:
Two racing seasons later on the RSS links and still going strong!
With her HRE P40 Wheels on she's ready to be broken in:
She'll be off to TC Design for one of their slick roll cages as well as coming back for a factory RS tail:
And now James is focusing on our FLorida 3.9 car... A nice twist with this one is some suspension work too:P More on that as we go...
Last edited by sharkster; 03-06-2012 at 06:00 PM.
#44
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We stay with hydraulic lifters. Whilst going to a solid would be neat and useful for certain stuff it wouldn't for emissions I can't really go into the specifics of our CR but it's higher than stock we have a few other piston tricks
#45
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And now back from TC Design with one of their slick roll bars installed:
Also concealed in the interior is a switch for the EVOMSit Dual-ECU set up. One EPROM has a full 91-octane tune and the second ECU harbors a full 93-octane map:
The rear decklid is taken off:
Along side is a factory GT3RS decklid:
Assembly:
Installed:
With rake:
Also concealed in the interior is a switch for the EVOMSit Dual-ECU set up. One EPROM has a full 91-octane tune and the second ECU harbors a full 93-octane map:
The rear decklid is taken off:
Along side is a factory GT3RS decklid:
Assembly:
Installed:
With rake: