4.5L Owners Thread - DeMan Motorsport
#661
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Just finished up my second track day with my 981 Cayman S with Deman motor, it was also my first track day with this setup with Apex wheels and proper track rubber.
This machine is mental and an absolute weapon. So much power and performance but so well balanced. Exploring the limits is a joy as it is always perfectly controllable. As silly as it is, there is a fun little satisfaction of hunting down a Mclaren, GT4, GT3, and GT2RS with something that visually looks pretty standard, even if the exhaust note makes it clear it's something very special. My little sleeper Cayman was a hoot, everyone who took it for a spin was blown away.
This machine is mental and an absolute weapon. So much power and performance but so well balanced. Exploring the limits is a joy as it is always perfectly controllable. As silly as it is, there is a fun little satisfaction of hunting down a Mclaren, GT4, GT3, and GT2RS with something that visually looks pretty standard, even if the exhaust note makes it clear it's something very special. My little sleeper Cayman was a hoot, everyone who took it for a spin was blown away.
__________________
2016 GT4-R
Rick DeMan
DeMan Motorsport
Upper Nyack, NY
845 727 3070
Porsche Sales & Service
Porsche Race services and parts
www.DeManMotorsport.com
2016 GT4-R
Rick DeMan
DeMan Motorsport
Upper Nyack, NY
845 727 3070
Porsche Sales & Service
Porsche Race services and parts
www.DeManMotorsport.com
#662
#663
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I was shown this thread by a friend of mine that is considering having this modification done to his 997.2 C2S. I currently own a 997.1 C2S and am aware that the M96/97 is completely different than the 9A1. Does DeMan do anything remotely similar to that power plant? I’ve already invested a lot of money into the car, low mileage and plan to keep for long time (couple k miles ago, had IMS solution done as a preventative measure, etc). I don’t see anything on their website, so I am assuming the answer is, NO.
#664
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I was shown this thread by a friend of mine that is considering having this modification done to his 997.2 C2S. I currently own a 997.1 C2S and am aware that the M96/97 is completely different than the 9A1. Does DeMan do anything remotely similar to that power plant? I’ve already invested a lot of money into the car, low mileage and plan to keep for long time (couple k miles ago, had IMS solution done as a preventative measure, etc). I don’t see anything on their website, so I am assuming the answer is, NO.
#665
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I just spent the last hour reading through this thread. Wondering if somebody can break it down for me and answer some of my questions. I have a stock 981 Spyder but I have no plans of putting on the track on a regular basis. I’m basically looking for a little more power during my weekend sprints. With that in mind, these are my questions.
1. What goes into the “basic“ 4.5 L upgrade? Does this include headers, exhaust, etc.?
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power?
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience?
3. What is the cost of a “basic“ upgrade like this? 4. What is the current turnaround time?
much appreciated.
1. What goes into the “basic“ 4.5 L upgrade? Does this include headers, exhaust, etc.?
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power?
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience?
3. What is the cost of a “basic“ upgrade like this? 4. What is the current turnaround time?
much appreciated.
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Cyclman (07-26-2022)
#666
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There is a lot on Rennlist in this section about costs etc. Certainly you can do the engine alone. But best to call Mr Deman for an answer.
Whilst we get Manthey Racing upgrades in Europe over this side of the pond we do wish we had access to Mr Deman or BGB too. Best of luck.
R
Whilst we get Manthey Racing upgrades in Europe over this side of the pond we do wish we had access to Mr Deman or BGB too. Best of luck.
R
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aryork (07-25-2022)
#667
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I have already reached out to him directly and I anxiously await his answers. I was informed by another Rennlist member that their prices and leadtime have gone up recently. Was just wondering if anybody had personal experience that has recently gone through the process.
thanks for your feedback
thanks for your feedback
#668
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1. What goes into the “basic“ 4.5 L upgrade? Block bored out, new pistons, rods, crankshaft, maybe camshafts (you'd think I would know this), fix vario-cam bolts, install coil heat shields, same fuel injectors, and Cobb access port with a tune (probably more I'm leaving out). You will use Motul 300V Power 5W40 oil with the upgrade. Does this include headers, exhaust, etc.? What is "included" is a matter of how you want to package it, but basically its a la carte. You can pick different headers and at least a couple flavors of exhaust.
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power? Last I heard stock gears are fine and it's not a matter of handling torque - swapping gears achieves more "even" ratios between gears and gets rid of the very long 2nd gear. The new clutch is a non-trivial change - you will get used to it, but don't go to a busy parking lot the first day you get it.
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience? I like the new gear ratios, but I might like my $8k more
If you have the extra money, do it. If not, IMO it would be fine to keep same gears. The new ones make a bit of a whining noise (which might reduce over time).
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power? Last I heard stock gears are fine and it's not a matter of handling torque - swapping gears achieves more "even" ratios between gears and gets rid of the very long 2nd gear. The new clutch is a non-trivial change - you will get used to it, but don't go to a busy parking lot the first day you get it.
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience? I like the new gear ratios, but I might like my $8k more
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Rick DeMan (07-26-2022)
#669
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I just spent the last hour reading through this thread. Wondering if somebody can break it down for me and answer some of my questions. I have a stock 981 Spyder but I have no plans of putting on the track on a regular basis. I’m basically looking for a little more power during my weekend sprints. With that in mind, these are my questions.
1. What goes into the “basic“ 4.5 L upgrade? Does this include headers, exhaust, etc.?
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power?
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience?
3. What is the cost of a “basic“ upgrade like this? 4. What is the current turnaround time?
much appreciated.
1. What goes into the “basic“ 4.5 L upgrade? Does this include headers, exhaust, etc.?
2. Is it worth it to just have the 4.5 L engine upgrade done with no changes to the transmission gear ratios and differential? From what I read, I definitely will need a new clutch, but I’m wondering if the stock gears will hold up with this much power?
3. Does anybody have said upgrade that they can comment on question 2. given their personal experience?
3. What is the cost of a “basic“ upgrade like this? 4. What is the current turnaround time?
much appreciated.
On #3 it's worth every penny.
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Rick DeMan (07-26-2022)
#670
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I echo BealeAss - if you are going to do it .. do it all .. worth it!
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Rick DeMan (07-26-2022)
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Sim68 (08-04-2022)
#672
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I went with catt’d and used my factory PSE . for me the sound is awesome .. I assure you .. the sound is loud enough and if you need to lighten up a bit .. turn off PSE
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Rick DeMan (07-26-2022)
#673
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Rick DeMan (08-02-2022)
#674
Intermediate
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Rick DeMan (08-02-2022)
#675
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It's a pretty mixed bag among the owners in terms of setup of catted vs catless. I had catless then switched to catted, Rick makes his own headers so the power loss between the two is non-existant. I also agree with @SLATETT it's plenty loud catted w/ PSE. The 981's also use the x-pipe for a little more juice. Admittedly the catless was fun as heck for a bit, straight up cup car feel and sound, but the smell got to me after awhile.
IMO the sound is no problem at all w/o cats if valves are closed (I have stock exhaust). It's very tame.
Here's a dyno pull video. I hope the tech had the valves open, but standing behind it is very loud - almost deafening to be honest once it gets to about 6k rpm...
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