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YOUR RESEARCHCS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
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Use on steel or aluminium liners
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Performed · outcome unconfirmed
Coatings are generally only used on Steel or Aluminium liners.
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
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Leading evidence: 'Use on steel or aluminium liners' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace when we go' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Although that may change when we go to the Slicks.
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
Set hills
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Suggestion
Bit hard with the suspension set up we have at the moment, but that is because it is set for the hills.
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
Use car
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Suggestion · Original poster
You mention the crank has been changed, is that because the 3.9 conversion is a bore and stroke change or just because you are using the car for competition?
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
Use engine will get and engine type
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Suggestion
I think it all depends on the application, type of use the engine will get and engine type.
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
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Suggestion · Original poster
You mention the crank has been changed, is that because the 3.9 conversion is a bore and stroke change or just because you are using the car for competition?
CS on the hill at Prescott yesterday - Page 2 - Boxster/Cayman - PistonHeads UK
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I'm assuming that was the blue one then. I was hoping to catch you for a chat but you weren't around in the paddock at the time I was admiring your car.
Yeah, sorry I didn't see you. I had a 5 year old to try and entertain between runs!!! I will be doing most of the Midland Championship rounds and all the Shelsleys. Yesterday was the first time out with the big engine, and it seemed to go well. Going to run it on slicks at shelsley next weekend, if the weather allows.
Seen the bikes go up the hill at prescott but seemed very narrow for a car! Would be interested to know what its like peddling a cayman up there and impressions of the 3.9 engine, i assume this is an svp motor?
Its not that narrow when your on the hill, except in a few places!! Engine has been developed by SVP and my company Westwood Cylinder Liners. We designed the crankcase conversion, they do the engine builds and the tuning side.
There has been a significant increase in power, although we have not had the car on a dyno yet. With all the suspension upgrades and diff, the car handles very well for hillclimbs. Further improvement will come when we fit the super soft hillclimb slicks.
The car has been completely stripped inside, new KW suspension, Lightweight flywheel, Quaife Diff, Full Cage, Cup Cables, Chris Tullett Exhaust, Motordrive Lightweight seats. We have lightweight boot and doors with plexiglass to fit in the next few weeks.
The engine has been converted to 3.9 with Westwood Cylinder Liners, Omega Pistons, Porsche Crankshaft and Carrillo Rods.
Interesting information - thanks for posting. You mention the crank has been changed, is that because the 3.9 conversion is a bore and stroke change or just because you are using the car for competition?
I presume the 3.9 litre conversion would be ok for primarily road use as well.
We needed to bore and stroke to get to 3.9. Car is fine for the road, with plenty of power!! Bit hard with the suspension set up we have at the moment, but that is because it is set for the hills.
Very nice indeed! bet that's alot of fun too drive on track
I'm seeing a nice carbon wing on there for a bit more downforce at the rear
Edited by evojam on Tuesday 28th April 11:44
Awesome thanks for posting. Could you give a little detail about the lwfw and diff you are running and how it benefits the car? Very interested to know more on those for my cayman s.
evojam said:
Very nice indeed! bet that's alot of fun too drive on track
I'm seeing a nice carbon wing on there for a bit more downforce at the rear
Edited by evojam on Tuesday 28th April 11:44
For the hillclimbs we do, downforce is not really an issue. If we were to use it on a track then yes i could see the benefit.
PR36 said:
Awesome thanks for posting. Could you give a little detail about the lwfw and diff you are running and how it benefits the car? Very interested to know more on those for my cayman s.
When i compete i switch the PSM off and then rely on the diff!! It is very good indeed and on twisty hills like Prescott or Loton it works a treat. I still have to be convinced on the Lightweight Flywheel!! It helps the engine rev a lot more, and once you are moving it is great. But for quick starts it spins up too quickly, and getting fast starts is difficult. Although that may change when we go to the Slicks.
Nice photos - thanks for posting.
I'm not an engineer hence this question: I notice from your website that the ductile liners you supply have no coating on them. Is this something that needs to be done prior to fitting?
As an aside, if you want to go the whole-hog on your cayman weight reduction program, there's plenty to choose from here:
http://www.gettydesign.com/index.php
Just got back from Shelsley and a 2nd in class!!!! Thank you for the question. We do not use any coatings on our liners, either Ductile or standard cast iron. Coatings are generally only used on Steel or Aluminium liners.
Trev450 said:
Good result - congrats. So which liners would you say are more durable, iron without any coating or steel/alloy with say Nicosil?
To be completely honest, I cannot give you a definitive answer. I think it all depends on the application, type of use the engine will get and engine type. We supply aftermarket and OE, and have never been told our liners are less durable. They will at some point need replacing, but so will Nikasil.
This is a source reference. Confirm exact model applicability in the original material.
