Question about 2002 Ducati ST4

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Exhaust Can anyone tell me where to get info on a stock exhaust mod for a st? I purcased a used set

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And want to modify them. I tried contacting this Strati guy but no response. ThanksJerry Do you and your bike a favor. Buy a set of pipes that won't lean out your motor and burn up the valves. I think I even have a used pair of Arrows laying around if you need,,,

Posted on Nov 10, 2008

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Valve clearances for triumph sprint st


0.10 - 0.15 inlet and 0.15- 0.20 exhaust on compression stroke.

Hope this helps

Apr 23, 2010 | 2001 Triumph Sprint ST

1 Answer

What was the stock carb used on a 77 yz 80?


Mikuni 28mm (VM28) was stock. Try Keihin or Del-Orto carbs.
You can easily get some on-line info on Keihin Flat slide (28mm), they seem to be the goer.
A new set of Boyesen Power Reeds and an Iridium sparkplug to replace the stock NGK B8ES. will make a lot of difference too.
If you got the dollars to spend, a new DG header and expansion chamber will really get you revving. (Give the exhaust port a clean regardless.)
Ebay provides an array of the above items cheaply.
Cheers.

Apr 11, 2010 | 2003 Yamaha YZ 125

2 Answers

I wish to debaffle o9 1200c


if you are on about the standard exhaust , then you will need a long cold chissel to punch out the washer welded in the baffle to direct air in to sound deadner. hammer the chissel through the washer making hole as big as you can , i did mine while exhaust were still on bike and use a 16mm blunt sds drill bit i had lying around. does create a harsh sound compared to screaming eagles.try the sportster .org site for more info.screaming eagles are the best way to go , i only punhed mine through cause i couldn't strech to carb, air filter and exhaust mod in the same month, it will also affect you efi system ,if you do not do some fueling, and air filter mods, the bike will lean out causing detonation problems and possible damage to engine.

Oct 03, 2009 | 2000 Harley Davidson XL 1200 C Sportster...

2 Answers

I'm about to change the stock pipes on my dyna to


First what other mods are you considering other than pipes? Second depending on your mods you may just want to stick with your stock ECM and touch base will your local Harley shop about downloads or MAPS available for the mods (for the ECM) you want to perform on the bike. The Screamin Eagle Race Tuner (SERT) is always an option. Open or closed loop, up to you, do you want the bike to adjust to your target AFR (Air Fuel Ratio) on the fly according to the bikes needs or do you want to set the AFR based on static items. Like today's weather you may make ajustments to get 13.5 AFR, come fall and cooler drier temps...your AFR WILL be something else.

JP

Aug 12, 2009 | 2006 Harley Davidson FXDI Dyna Super Glide

1 Answer

81 xj650lh midnight maxim black exhaust, sooty plugs keep fouling


hi,fairly common problem with modified exhaust,start with the pilot screws,turn right in untill the screws are firm then back out 1 and 3/4 turns,this is a fairly standard rule of thumb that will get most things going,as far as the jets go,the original size would be a good starting point,but you should only need to go up 10-15 sizes to compensate for the exhaust mods(ie stock might be 127 may need to go to138 or 140 etc),the other thing that i would recommend is getting hold of a set of damped carb balancers these will enable you to get the mixtures and carb balance dead right,they are relitively cheap and easy to use and will have paid for themselves the first time you use them.(i regularly get 4-8 sometimes 10-11 extra hp over stock by tuning the carbs up properly).hope this helps

Jul 05, 2009 | 1981 Yamaha XJ 650

1 Answer

Wide tire on Night Train


You might start here http://www.us.metzelermoto.com/produ...ge_1/index.htm

Nov 20, 2008 | 2004 Harley Davidson FXSTB - FXSTBI Night...

1 Answer

Exhaust


and want to modify them. I tried contacting this Strati guy but no response. ThanksJerry Do you and your bike a favor. Buy a set of pipes that won't lean out your motor and burn up the valves. I think I even have a used pair of Arrows laying around if you need,,,

Nov 10, 2008 | 2005 Ducati ST4S

1 Answer

Exhaust


and want to modify them. I tried contacting this Strati guy but no response. ThanksJerry Do you and your bike a favor. Buy a set of pipes that won't lean out your motor and burn up the valves. I think I even have a used pair of Arrows laying around if you need,,,

Nov 10, 2008 | 2000 Ducati ST 2

1 Answer

1098 end caps on 996 exhaust?


You could get actual 1098 cans chop the pipes off weld a reducer on and then in turn weld that to your stock pipes... lotsa welding work though and its hard to find someone who'll do a really good job on stainless.,,,

Nov 10, 2008 | 2001 Ducati 996 R

1 Answer

1098 end caps on 996 exhaust?


You could get actual 1098 cans chop the pipes off weld a reducer on and then in turn weld that to your stock pipes... lotsa welding work though and its hard to find someone who'll do a really good job on stainless.,,,

Nov 10, 2008 | 2001 Ducati 996

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