what did you do to your 944 today

[Eldavo]

Tried to explain to my Indys how my crank scraper fitted to the block and then tried to justify why it had cost me £250. Succeeded in the first part, failed in the second.

Haha..

All you need to do is let them drive to identical spec cars but one fitted with a crankscraper....they'll soon realise how cheap they are for the difference they make...

Don't Paragon sell a crank scraper for $80? And the 88+ sump has an improved baffle/scraper arrangement anyway.

I drink. I buy things.

You haven’t seen my £90 carbon fibre armrest then?

Mine is the $80 Paragon one from ishihara johnson. I added the Teflon bit, and another bit, and then shipping and then duty and ended up with a £250 one

 

[blade7]

Tried to explain to my Indys how my crank scraper fitted to the block and then tried to justify why it had cost me £250. Succeeded in the first part, failed in the second.

Haha..

All you need to do is let them drive to identical spec cars but one fitted with a crankscraper....they'll soon realise how cheap they are for the difference they make...

Don't Paragon sell a crank scraper for $80? And the 88+ sump has an improved baffle/scraper arrangement anyway.

I drink. I buy things.

You haven’t seen my £90 carbon fibre armrest then?

Mine is the $80 Paragon one from ishihara johnson. I added the Teflon bit, and another bit, and then shipping and then duty and ended up with a £250 one

I like a drink too, and you're talking to someone that has a collection of expensive 944 garage ornaments going back 10 years []. I just take Pete's endorsement of the scraper with a little pinch of salt, when it was part of a £10k engine rebuild.

 

[PSH]

I like a drink too, and you're talking to someone that has a collection of expensive 944 garage ornaments going back 10 years []. I just take Pete's endorsement of the scraper with a little pinch of salt, when it was part of a £10k engine rebuild.

I like 'SALT'... on a serious note though, I accept that it's difficult to quantify the effect of one item when so much has been changed, however, I do believe that the feel of the engine today does in part owe it's virtues to the crank scraper. The engine is very responsive, either low down or top end, the low down effect will be down to, in part, the higher capacity, lightened flywheel, race pistons with much less friction, all new internals, 85% duty cycle but yes, also due to the crank scraper which greatly reduces the mass around the crank. And then, of course, there are all the other new parts that give so much to the engine, larger intake and exhaust being but two.

Pete

 

[edh]

"greatly reduces the mass around the crank"?

That's hard to believe it would be significant in the way you describe...how much does the crank weigh? (not to mention the other rotating masses). A few ml's of oil isn't going to make much difference is it?

techy stuff here

[link=https://www.crank-scrapers.com/What%20is%20a%20crank-scraper.html]https://www.crank-scrapers.com/What%20is%20a%20crank-scraper.html[/link]

 

[PSH]

Well it actually says so in the link you posted somewhere Edh...IIRC it gives the example of a V8 which in at a certain RPM empties it's sump with all it's contents being held around the crank, that weight adds up. I have no idea how much oil is captured by the crank on a 944 but it will be a fair bit which the scraper eliminates thus less weight and drag resulting in a more responsive engine.

 

[944Turbo]

Its not stuck to the crank though, the oil is just following around in the wind created by the movement of the crank. This might create more drag, but then forcing the air ahead of the crank through the gaps in the scraper seal will also create drag as will removing the oil from the moving parts. It gets complicated quickly!

However oil free of air available for the pickup pipe is definitely a good thing.

 

[blade7]

Pictures of early and late sumps suggest Porsche did alter the internal design, it looks like they added a modified scraper/baffle in the bottom of the later sumps. They also added the windage ports on the 2.7/30 blocks. Whether that improved performance or was for reliability who knows. Though there are pro engine builders that say 104mm blocks that are run on 20w/60 oil rarely knock out the No.2 big end bearing.

 

[944Turbo]

Yes, there have been various developments in the sump baffle design, Simon P showed me 3 different ones side by side and the design became more complex in later years

Tony

 

[blade7]

Although the crank is really heavy, it's surprisingly easy to spin it up in the block without the rods attached.

 

[Waylander]

Being a relative idiot where this tuning is concerned, Is a dry sump also a solution to all this oil mass in the air in the sump?

just question, you can stone me later

 

[Eldavo]

Although the crank is really heavy, it's surprisingly easy to spin it up in the block without the rods attached.

I‘d post a sexy picture if I knew how.

Calm down - it’s of my balanced crank and rotational assembly, not me x

 

[blade7]

Although the crank is really heavy, it's surprisingly easy to spin it up in the block without the rods attached.

I‘d post a sexy picture if I knew how.

Calm down - it’s of my balanced crank and rotational assembly, not me x

Amongst my garage ornaments are a 3.0 crank and a new set of Carrillo rods [].

 

[924Srr27l]

2.5 Crank Standard weight 24.5Kg,

LR Race Knife edged 21.5kg

2.5 Block 42kg

3.0 Block 38kg

R

 

[white944]

Got the polish out......

 

[blade7]

Nice wheels, I'd drop the ride height a bit if it was mine though.

 

[white944]

Yeah, it looks a little surprised doesn't it.

 

[PSH]

today my son kindly fitted in an oil change and general look over at his new premises in Perivale NW London before my MOT tomorrow morning. If any of you guys are looking for somewhere to service your cars and who knows the 944 very well, give him a call and have a chat about what you need. He will also be doing body repairs and full resprays.

mention my name.. no best not.. he may put the price up to cover for all my freebies...

Pete

 

[Dan944t]

Good luck for tommorow mate

 

[PSH]

Just a quick note to say the car passed with flying colours, no advisories..., here's to another year of happy driving...I still have my own list of 'to do' items though but I'll get there....

 

[PSH]

Had a fun day at my son's opening BBQ at his new premises, lots of good company and food...If anyone needs a top mechanic or body shop specialist, check out Richard and Luis RSH Performance....

Pete