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Another completed DeMan 4.5L 718 - Impression/review!

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Old 01-24-2023, 12:37 PM
  #346  
Westcoast
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Originally Posted by Westcoast
I could really go for the 2 through 5 gear set...
Originally Posted by JAhmed
Do it, it really changes the car quite a bit

Do the motor while the trans is out also.
Originally Posted by burnergt4
I'm keeping my 718 engine stock to appease the emissions gods, but the first order of business after it was shipped to me was I got it up to Rick to drop in 2-5 ratios and an LSD. 10/10, highly recommend. Here's what they look like out at Lime Rock (wish I had a track day with stock ratios to compare directly):

https://www.youtube.com/watch?v=xZXv9c3scAU
You guys are really making this hard, I thought that I had dodged the bullet when I didn’t make to Parade last year (DeMan was an easy drive away), could have added a few days to that trip and had the swap done...

Perhaps I need to enact Plan B, get the gears shipped and do a local installation..

Old 01-24-2023, 12:41 PM
  #347  
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@burnergt4 Can you do a quick summary of the LSD swap, in terms of how it changed the behavior of the car?

Doing a 4.5 mod on a 4RS would be fiscal lunacy, but I guess some people wipe their butts with $$$.

Last edited by Adrift; 01-24-2023 at 12:43 PM.
Old 01-24-2023, 01:15 PM
  #348  
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Originally Posted by Adrift

Doing a 4.5 mod on a 4RS would be GENIUS, but I guess some people wipe their butts with $$$.
FIFY
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dnimi123 (01-25-2023)
Old 01-24-2023, 02:35 PM
  #349  
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Originally Posted by Adrift
@burnergt4 Can you do a quick summary of the LSD swap, in terms of how it changed the behavior of the car?
In addition to everything else you'd expect, it completely killed rear-end wiggle under hard braking.

In my 981 4.5L I had a Guard LSD basically for the entirety of my ownership and never could get why everyone kept talking about the rear end getting loose under hard braking. But then I took delivery of my 718 with the stock diff, and during some initial shakedown drives I figured out what everyone was on about (not even going very fast, we're talking from 50mph down to 20—the amount the back end moved around was shocking). Had the diff swapped at the same time was the gears, issue solved.

There's a lot of chat about alignment and suspension bits taming the rear end instability under braking, I honestly think replacing the stock LSD with something more substantial goes a long way towards solving the issue.
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Old 01-24-2023, 04:32 PM
  #350  
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Originally Posted by dnimi123
He did a 991.2 GT3 I think... so practically the same thing and put it up to 4.5L
The GT3/GT3RS and GT4 RS engines are completely different from the 981/718 GT4/Spyder engines.

But 4.5L is possible on them all. The outputs can not be compared but they are both very strong!

991.2RS PDK to 4.5L 537WHP on my Dyna Pac dyno
991.1 RS
991.2 GT3 Touring
Currently 992 GT3 Touring on the Dyno. 518 WHP and not finished yet.
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Old 01-24-2023, 05:16 PM
  #351  
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718 4.5L GT4 with a big build(136k) and low miles(7k) with the full deman package just sold for 159k on PCarMarket, guess that's the new price ceiling on these.

Last edited by cooler2442; 01-24-2023 at 05:17 PM.
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Old 01-25-2023, 02:45 AM
  #352  
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Originally Posted by cooler2442
718 4.5L GT4 with a big build(136k) and low miles(7k) with the full deman package just sold for 159k on PCarMarket, guess that's the new price ceiling on these.
And it was on 'reserve' so clearly the seller was expecting a loss. I think he was in it for close to $200k ($136 plus $54 to Rick plus Alpha)... OUCH. Maybe you gotta keep these things a long long time and get your fun out of them...

Last edited by dnimi123; 01-25-2023 at 02:46 AM.
Old 01-25-2023, 02:48 AM
  #353  
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Can anyone let me know the cost range is to to the LSD?
Old 01-25-2023, 08:41 AM
  #354  
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Originally Posted by dnimi123
And it was on 'reserve' so clearly the seller was expecting a loss. I think he was in it for close to $200k ($136 plus $54 to Rick plus Alpha)... OUCH. Maybe you gotta keep these things a long long time and get your fun out of them...
Was listed here for 200k before the auction
Old 01-25-2023, 09:47 AM
  #355  
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Originally Posted by Westcoast

Perhaps I need to enact Plan B, get the gears shipped and do a local installation..
@Westcoast … is this an offering now?
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IRM (01-26-2023)
Old 01-25-2023, 09:55 AM
  #356  
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Originally Posted by dnimi123
Can anyone let me know the cost range is to to the LSD?
$2,500 - $6k
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Old 01-26-2023, 05:38 PM
  #357  
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Originally Posted by cooler2442
718 4.5L GT4 with a big build(136k) and low miles(7k) with the full deman package just sold for 159k on PCarMarket, guess that's the new price ceiling on these.
I dont believe it sold.. reserve was higher.
Old 01-26-2023, 05:48 PM
  #358  
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Originally Posted by Rick DeMan
I dont believe it sold.. reserve was higher.
Looks like it did sell.
Does any warranty transfer?
Old 01-26-2023, 06:52 PM
  #359  
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Originally Posted by Westcoast
You guys are really making this hard, I thought that I had dodged the bullet when I didn’t make to Parade last year (DeMan was an easy drive away), could have added a few days to that trip and had the swap done...

Perhaps I need to enact Plan B, get the gears shipped and do a local installation..
Originally Posted by TDT
@Westcoast … is this an offering now?
It was when I asked Rick about it one year ago... you will have to ask him if he will still do this.
Old 01-27-2023, 12:47 AM
  #360  
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Originally Posted by Rick DeMan
I dont believe it sold.. reserve was higher.
Either way the value of your cars is in the absolute joy they bring and not necessarily the resale value. I think everyone appreciates what you do regardless of the cost up front or on the back end.
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