SP exhaust on Strada

Mr.R · 01-Sep-2006, 20:07

Hi,
I use LOCTITE 5699 Flange Sealant spareingly,it seals my 50mm system on the 851/916sp,the race pipes on my 950 full race bevel and the spannies on my tz's in the past. Leave it to set overnight before fireing it up then you should be ok.It's also easy to take apart,i get mine from BSL.
50mm full systems are to big for a Strada 888/851's, you would need hot cams and larger exhaust valves to take advantage of the big bore header system fully,otherwise your more likely to get less power IMHO.

Steve Robins

Jools · 01-Sep-2006, 20:24

Yeah...I agree with Mr R.

I read through the moto-one stuff regularly to fuel my fantasies. If you read the exhaust thread carefully I think that Douglas851 is 5mm out on his sizings. What the moto-one article boils down to is:

888 Standard = 40mm = strangulation
ST4 Standard = 45mm = Good power & torque for not much cash
ST4 DP System = 50mm = No appreciable gain at the top end and a big hole in the torque curve

In summary it seems the 45mm system is the optimum unless you're gonna tune it further

Jools · 01-Sep-2006, 22:07

A little blow

Header inserts

and now flange sealant

Does the webteam know about this thread !!!

Douglas851 · 01-Sep-2006, 22:15

I have just gone out to the garage and measured all the various exhausts I have.
Standard 888, 40mm headers. Standard ST4, 45mm headers. SP2 exhaust on bike 45mm headers and 50mm silencers. So, yes I was 5mm out, but the bike has the right size.
Still very happy with what I have.

jgriff · 01-Sep-2006, 23:37

If you have ST4 headers, there will be something radical, that has to happen, or has happened , on the rear header near the middle of the bend, so it clears the swing arm. Hence Moto one ref "modified". I have a set.

Griff

Jools · 01-Sep-2006, 23:47

Quote:

Originally Posted by jgriff

I have a set.

Griff

For sale?

Douglas851 · 02-Sep-2006, 09:14

My ST4 headers are awaiting modification, which is why I went for the SP system when it came up on ebay.
The ST4 headers are accident damaged, but easily fixable. I can send pictures if someone is interested in buying them.

pibbow · 02-Sep-2006, 10:24

Well guy's I have spoken to Geoff baines and he said that the 50mm is the optimum system for the 888 this with a matching eprom and open air box can be set up with very good results.

Peter

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01-Sep-2006, 22:07	#3
Jools DSC Club Member BSB Star Posts: 6,930 Join Date: Jul 2002 Location: Bedfordshire Mood: MT Meglomaniac A little blow Header inserts and now flange sealant Does the webteam know about this thread !!! The Patent Jools Mood Meter -Today I am: ___________^ Reply

01-Sep-2006, 22:15	#4
Douglas851 Registered Forum User Mille Posts: 145 Join Date: Feb 2005 Location: Hastings, East Sussex I have just gone out to the garage and measured all the various exhausts I have. Standard 888, 40mm headers. Standard ST4, 45mm headers. SP2 exhaust on bike 45mm headers and 50mm silencers. So, yes I was 5mm out, but the bike has the right size. Still very happy with what I have. Reply

01-Sep-2006, 23:37	#5
jgriff Registered Forum User GTL Posts: 496 Join Date: Feb 2006 Location: Brisbane Mood: anamorphic with overtones of sanguineness! If you have ST4 headers, there will be something radical, that has to happen, or has happened , on the rear header near the middle of the bend, so it clears the swing arm. Hence Moto one ref "modified". I have a set. Griff Reply

02-Sep-2006, 09:14	#7
Douglas851 Registered Forum User Mille Posts: 145 Join Date: Feb 2005 Location: Hastings, East Sussex My ST4 headers are awaiting modification, which is why I went for the SP system when it came up on ebay. The ST4 headers are accident damaged, but easily fixable. I can send pictures if someone is interested in buying them. Reply

02-Sep-2006, 10:24	#8
pibbow Registered Forum User Mille Posts: 378 Join Date: Jun 2005 Location: Scotland Mood: Very sad Well guy's I have spoken to Geoff baines and he said that the 50mm is the optimum system for the 888 this with a matching eprom and open air box can be set up with very good results. Peter Reply