Menu toggle

987.1 or 987.2

richardjjs1

New member
Wondered when the 987.2 was introduced
What is the difference
I understand that the later models have a change to the IMS bearing that make then internal
I also find that the book 101 Projects for Porsche Boxster 986 and 987 really does NOT cover the upgrades to even the 987.1 and there does not appear to be a Bentley manual for 987 (So I did not sell my 986 one)



 
Richard,

Although there may have been other improvements, as far as I can recall the main differences between the 987.1 and 987.2 engines are:

  • direct fuel injection
  • IMS has been deleted (the cams are driven directly from the nose of the crankshaft)
  • Alusil alloy used for the crankcase (987.1 used the Lokasil method)
  • 4 oil pick-ups from the cam covers (987.1 had 2)
  • "on demand" oil pump
The Gen2 was introduced for the 2009MY.

Jeff
 
Sounds far better no wonder they are so much more.
Hopefully my IMS is OK (2007 model year)
Had a 986 and just upgraded to 987.1 Much more refined and enjoyable
Also Manual not Typtronic (Swore I woulkd never buy another manual but love it
Thanks

Motorhead said:
Richard,

Although there may have been other improvements, as far as I can recall the main differences between the 987.1 and 987.2 engines are:

  • direct fuel injection
  • IMS has been deleted (the cams are driven directly from the nose of the crankshaft)
  • Alusil alloy used for the crankcase (987.1 used the Lokasil method)
  • 4 oil pick-ups from the cam covers (987.1 had 2)
  • "on demand" oil pump
The Gen2 was introduced for the 2009MY.

Jeff

 
In addition to Jeff's comments I believe that there were some visual changes too to the style of the radio/navigation equipment, and to the fog/side lights to which were added an LED strip for the side lights. Also if you are looking at automatics the Gen 2 introduced the PDK twin clutch gearbox instead of the previous Tiptronic box.
Andrew.
 
Yes, that's right Andrew. The first generation of PDK transmission replaced the Tiptronic trans used on the Gen1 cars.

Apart from the minor cosmetic and PCM system you mentioned, I believe that there were spring/damper upgrades and the track rods or track rod ball joints were also beefed-up; a mod which can also be used on the Gen1 cars.

Richard, one advantage of having one of the later Gen1 cars is that Porsche had had more time to address the IMS bearing issue via revisions. Hopefully you'll be OK. Bore scoring has also been an issue with the Gen1 cars but as far as I'm aware the change to Alusil has given the required durability improvements with the Gen2 engine.

If you're going to the Club's 987 Technical Seminar next week you should be able to get some useful insights into both generations.

Jeff
 
WAnted to go but no spaces Would have been really helpful
Hopefully I will be advised if a place becomes available.
Just seen a nice Yellow 987 09 Plate How do I know if its the 987.2 from outside in case I win the lottery tomorrow
Would like to have a look anyway

Richard

 
richardjjs1 said:
Just seen a nice Yellow 987 09 Plate How do I know if its the 987.2 from outside in case I win the lottery tomorrow
Would like to have a look anyway

Richard


Different front PU grilles with running lights, different wheels.

Just look online for pics.

Jeff
 
See my profile pic, it's a 987.2 I think the led-type side/running light strip which looks like it goes across continuously on the .2 is a distinction from the 987.1 in the picture below
p.porsche-boxster-petrol-convertible.jpg


I think an 09 plate should be OK.
 
I've just realised that my profile pic is a bit small to see the difference, here is a 2010 model
__large__b7dd675a-8b93-4521-a5f3-20d96fe277a3.jpg



 
Thanks
Will have a look and perhaps a photo
How on earth have Porsche continued to use Nikelsil when its been a problem over so many years - I had a BMW that had the engine replaced many years ago

Thanks
 
Richard,

I believe that quite a few manufacturers used the Lokasil method for a while, BMW and Porsche included. Porsche had a few problems with castings on early 986 (and 996?) cars but, as you say, persevered with the method for some time presumably for cost reasons.

Whether or not reported cylinder failures (D-chunking) are attributable to the technique I've no idea, but I'm not aware of any similar failures occuring with the Gen2 engines which have now been running 8-years or so. Incidentally, one other upgrade introduced with the Gen2 engine was a closed deck construction which provides better cylinder stability compared with the Gen1's open deck.

Jeff
 
Some one posted that the main problem with the 987 with none replaceable IMS bearing was the Lokasil Cylinder Liner.(Sorry Bore Scoring)
However just been to have a look at this yellow 987 and it would appear to be a 987.2 (Running Light Grill Very distinctive) Its 20k. Not sure of mileage or specification will look on Tuesday

What do you mean by Closed Deck construction. Love engines etc and would like to know more

THanks
 
Personally I would always recommend a Gen2 .
Best to always get any potential new purchase a pre health check via OPC or a good Independent.
A couple of hundred quid can save lots of heartache and money in the future hopefully.
Hope that helps.
Cliff.
 
Hi Jeff
That is an interesting page about deck construction, perhaps Porsche took that route on a cost basis and the Boxster engine (being the budget baby) probably was never intended to be race tuned using forced induction ?. Also the coolant has further to travel than a front engine layout, this coupled with the better cooling of the open deck meant they would probably not anticipate seeing any issues. I imagine you could probably safely turbo charge the Gen 2 engine. I wonder if anybody has [8|] Great thread.
 
Graham,

I think that the Gen1 engine was very much "value engineered". The IMS layout was used so that two halves of the engine - split vertically - were identical, the cams being driven from different ends on each bank; a significant cost saving.

TPC Racing in the States have offered a turbo option for both 987 engines for some time:

http://www.tpcracing.com/products.html

Jeff
 
My god. 500hp from a stage 3. Beyond Ferrari F430 figures for 2 less pots. $14k though. May as well go for a 911 At that When added to a 3.4 Boxster. I think doing that to a Gen1 would be asking for trouble down the line. An old mechanic friend of mine used to say Speed empty’s wallets. (Still would love a manual 430. ??)
 
Always recommend gen 2 and an inspection
as Mr D says bore scoring the big gen 1 issue
mine as an 07 s
engine was using lots of oil
luckily I managed to get it thru the 111 pt check( or worryingly!) so when the engine needed total rebuild 6 months in I didn’t have to fork out £10k ( rebuild plus new boxter for a month)
caveat emptor etc
 

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Back
Top