Notices
964 Forum 1989-1994
Sponsored by:
Sponsored by:

Engine performance upgrade to my 964

Thread Tools
 
Search this Thread
 
Old 07-06-2004, 06:58 AM
  #46  
Adrian
Addict
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member

Thread Starter
 
Adrian's Avatar
 
Join Date: May 2001
Location: Parafield Gardens
Posts: 8,027
Likes: 0
Received 16 Likes on 16 Posts
Default

Dear Phil,
I hope so. When the final sort of schedule (awaiting response from PCGB) is put together I will let everyone know. This is for two reasons,
1/. For those who wish to get together and
2/. For those who wish to avoid me
The schedule has us leaving Switzerland on the 14th October and arriving in the UK on the 15th October withour first event on the 16th October at Roly Baldwin's place.
I have not yet decided on the chunnel or the ferry yet.
Ciao,
Adrian
964C4
Adrian is offline  
Old 07-06-2004, 07:00 AM
  #47  
Phil Raby
Addict
Rennlist Member

 
Phil Raby's Avatar
 
Join Date: Feb 2002
Location: West Sussex, UK
Posts: 1,746
Likes: 0
Received 3 Likes on 3 Posts
Default

Chunnel with a car is very dull - like being stuck in a carpark for half an hour. Ferry's much nicer - you actually feel as if you're on a voyage

How about an interview for 911&PW while you're here? A good plug for the book!

Cheers
Phil Raby is offline  
Old 07-06-2004, 07:04 AM
  #48  
Christer
Race Car
 
Christer's Avatar
 
Join Date: Aug 2001
Location: London, UK
Posts: 4,922
Likes: 0
Received 1 Like on 1 Post
Default

I am going to GT One which I think is virtually next door to Roly Baldwin's (?) on Saturday - I'll try to see if he is around....
Christer is offline  
Old 07-06-2004, 07:04 AM
  #49  
Adrian
Addict
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member

Thread Starter
 
Adrian's Avatar
 
Join Date: May 2001
Location: Parafield Gardens
Posts: 8,027
Likes: 0
Received 16 Likes on 16 Posts
Default

But I get a bit sea sick on ferries. Wellington to Picton in New Zealand was the last time. However cost will play a significant factor. I want to go from Caen to Portsmouth to avoid getting lost. I know where Portsmouth is.
Sure I will be happy to give you an interview. You know I am a man of a few words
Ciao,
Adrian
964C4
Adrian is offline  
Old 07-06-2004, 07:07 AM
  #50  
Phil Raby
Addict
Rennlist Member

 
Phil Raby's Avatar
 
Join Date: Feb 2002
Location: West Sussex, UK
Posts: 1,746
Likes: 0
Received 3 Likes on 3 Posts
Default

Tricky to get the tunnel to Portsmouth, unless you're handy with a spade
Phil Raby is offline  
Old 07-06-2004, 09:56 AM
  #51  
Roygarth
Three Wheelin'
 
Roygarth's Avatar
 
Join Date: Nov 2001
Location: Norfolk
Posts: 1,363
Received 0 Likes on 0 Posts
Default

Originally posted by Christer

There is no extra effort and no (or very small) extra cost. This one is a no-brainer. Really. Its a bit like going to Weightwatchers without weighing yourself first.
L.O.L
Roygarth is offline  
Old 07-06-2004, 10:05 AM
  #52  
Roygarth
Three Wheelin'
 
Roygarth's Avatar
 
Join Date: Nov 2001
Location: Norfolk
Posts: 1,363
Received 0 Likes on 0 Posts
Default

Must admit I can't think why one wouldn't get a pre-mod dyno, especially as I can't believe they'd charge you for it.

Surely if they carry out the same mods to a tired 100K miler 964 and a fresher 25K miler 964 the end BHP will be different. Surely they can't aim for a target BHP unless they know what they are starting with?

(Caveat to above = 'I know nothing' said in joke Spanish accent)
Roygarth is offline  
Old 07-06-2004, 01:23 PM
  #53  
Ruairidh
Super Guru
Rennlist Member

 
Ruairidh's Avatar
 
Join Date: Feb 2002
Location: California
Posts: 1,819
Received 3 Likes on 3 Posts
Default

Originally posted by Roygarth


Surely if they carry out the same mods to a tired 100K miler 964 and a fresher 25K miler 964 the end BHP will be different. Surely they can't aim for a target BHP unless they know what they are starting with?

(Caveat to above = 'I know nothing' said in joke Spanish accent)
I also know nothing, which is why I'm asking the same question as Piers.

I see Adrian's point - he is paying for 285bhp and not a gain of "xxbhp". And I expect if he doesn't get that end result there will be hard conversations with Sportec.

That makes sense. What I don't get is how Sportec guarantee the 285? There must be some limit to how much increase their kit can deliver?

And thats my question - how does this work for them and their customers? Do they only guarantee the 285 if the engine is in OK shape? Do they tell you once they have it what else needs doing in order for the kit to deliver the promised bhp?

I'm interested for my own education here.
Ruairidh is offline  
Old 07-06-2004, 02:21 PM
  #54  
Adrian
Addict
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member

Thread Starter
 
Adrian's Avatar
 
Join Date: May 2001
Location: Parafield Gardens
Posts: 8,027
Likes: 0
Received 16 Likes on 16 Posts
Default

Wait until the modification is done and then comment. Nobody has seen or understands the actual work that will be carried out.
Ciao,
Adrian
964C4
Adrian is offline  
Old 07-06-2004, 03:03 PM
  #55  
DaveK
Race Car
 
DaveK's Avatar
 
Join Date: Nov 2001
Location: Surrey, UK
Posts: 4,140
Likes: 0
Received 1 Like on 1 Post
Default

I'm not sure people are questioning whether you know your engine or not. I think the main reason people are suggesting a "before" dyno run is because if you take your car to 3 different dynos, you are likely to get 3 different results. It's also useful to know the calculation that is being used for transmission loss - and that the figure the dyno shows for the stock engine is roughly what you would expect.

I don't think the suspicion is directed particularly at Sportec. It's only that there are many companies that advertise power gains, and many of them don't live up to the claims. A before dyno plot as a reference is what most of us would do, simply so we can see there is a difference.

Obviously if you don't want one, there is no point getting one.
DaveK is offline  
Old 07-06-2004, 03:16 PM
  #56  
Christer
Race Car
 
Christer's Avatar
 
Join Date: Aug 2001
Location: London, UK
Posts: 4,922
Likes: 0
Received 1 Like on 1 Post
Default

Adrian

This has nothing to do with whether you know your car or not, I don't think anyone means any disrespect. My final point is:

You are looking for 285hp. At what level of transmission loss are you looking for those figures? 15%? 45%? Unless Sportec have a dyno which can accurately measure the actual tranny powerloss on your particular car then I would assume they calibrate your cars powerloss in order to get 245-250 hp initially and then apply the same powerloss to the equation in order to get 285hp at the end (and nothing wrong with that really)? Which is the only reason I would ask to get the pwer at the wheels measure before and after. This has nothing to do with whether i know better than you, whether you know your car or not or whether you feel that I am suspicious or dismissive. I only ask out of interest not out of spite, I only ask because I do not understand how you can be sure that the dyno can somehow know your drivetrain loss.

I have the same issue with 9M. They quote fwhp as well, but they provide both. I also know they only apply something like a 12% loss to the drive train on a C2 so the fwhp figures are not inflated. But in any case, I know I had around 221rwhp on mine before the conversion, so whether 9M say it will be 340, 350, 375, or 390 hp at the end, I will only look at the rwhp because it does not have any corrective factor applied to it.

Any actual explanations from you on how Sportec can without error calculate the drivetrain loss on your car would be greatly appreciated - and I mean other than 'oh no, you don't know anything', or 'well Sportec have a magic dyno that is from another dimension' or 'i feel treated like a criminal because people are asking questions'. I am sorry to be a bit short, but I personally am only asking a question which if you don't wish to/can't answer then I would prefer that you just tell me to **** off because what you have said so far (IMHO) defies logic.

Sincere question - sincere answer would be nice!
Christer is offline  
Old 07-06-2004, 04:05 PM
  #57  
Adrian
Addict
Lead Rennlist
Technical Advisor
Rennlist
Lifetime Member

Thread Starter
 
Adrian's Avatar
 
Join Date: May 2001
Location: Parafield Gardens
Posts: 8,027
Likes: 0
Received 16 Likes on 16 Posts
Default

Dear Christer,
Sincere answer; Wait until the modifications are carried out.
This means after 15th July. Until then the subject is closed.
Ciao,
Adrian
964C4
Adrian is offline  
Old 07-06-2004, 04:11 PM
  #58  
Phil Raby
Addict
Rennlist Member

 
Phil Raby's Avatar
 
Join Date: Feb 2002
Location: West Sussex, UK
Posts: 1,746
Likes: 0
Received 3 Likes on 3 Posts
Default

I think we're all going to have to agree to disagree on this one. May I respectfully suggest we give it a rest before things get out of hand once again? Remember, John Bog's not here to moderate

Cheers
Phil Raby is offline  
Old 07-06-2004, 04:22 PM
  #59  
Irishdriver
Burning Brakes
 
Irishdriver's Avatar
 
Join Date: Jun 2001
Location: Germany
Posts: 1,049
Likes: 0
Received 1 Like on 1 Post
Default

Adrian,

Relax, the boys are asking honest questions, but I think the issue here is the degree of modification.

If you do small changes - just a chip for example - then berfore and after make sense.

To my mind (yes well stirred last Sunday) if you increase the capacity with bigger pots etc and the bottom end is healthy, then you are talking about a new engine. ANd yes I wouls expect the same results from a smokey 200k km motor as from a 20k km motor as they should be the same after rebuild. That is why I agree before is not that useful in this case.

However, if we continue the weightwatchers theme - it is often fun to see the before and after pictures - even if you used lyposuction.
Irishdriver is offline  
Old 07-06-2004, 04:24 PM
  #60  
Phil Raby
Addict
Rennlist Member

 
Phil Raby's Avatar
 
Join Date: Feb 2002
Location: West Sussex, UK
Posts: 1,746
Likes: 0
Received 3 Likes on 3 Posts
Default

Is lyposuction similar to supercharging?
Phil Raby is offline  


Quick Reply: Engine performance upgrade to my 964



All times are GMT -3. The time now is 11:46 AM.