22 replies to this topic

[JetBLICK]

It true, webers are an arse to set up.. so many millions of parts, its take someone with years of experience and preferably a RR to set one up fo shizzle. But you cant dismiss SU's just because they're simple. It still takes someone who knows what their doing and all their years experience to set one up properly. Tuning old cars is never an exact formula. You could take two cars of exactly the same spec, both with the same weber, and they'd end up with completely different set-ups. Likewise you can do the same on two cars running SU's and theres no guarantee they'd have the same needle.




In reply to the first qu, I'd say £80 was fair. Who you taking it to?

[imabitnaughtyxx]

5 needles :S southam got everyone bang on first time i believe, just SU's, just 1 needle, 1 profile, based on engine spec. Rolling road only makes it easier and a tiny bit more accurate so that other 0.0000001bhp can be achieved.


and you can check timing on rolling road under load... but with timing it makes no difference if its under load or not, strictly on rpm.

yes but my engine has been mucked about with and im running a 2 and 3/4 inch stainless pipe and cone filter. also an auto so the rev range has to be spot on for the kickdown. not s easy as 'bung a needle' in there.

[imabitnaughtyxx]

Well im a housewife and do not have any idea frankly about tuning at home. i learnt what i need to know from haynes and personal experience.
Rather have a car that has been given the professional once over at least one time. My car now runs great and very economically. im very pleased and would have spent much more to get it running like it is now.

[alexcrosse]

cant say anything back to that! lol, aint fondled with automatics before. Just wrote a 5000 word + writeup on automatic transmissions with manual overrides, i no how automatic boxes work! but no experience. What is the hydraulic fluid to the band valves and piston valves relative to though?

[imabitnaughtyxx]

cant say anything back to that! lol, aint fondled with automatics before. Just wrote a 5000 word + writeup on automatic transmissions with manual overrides, i no how automatic boxes work! but no experience. What is the hydraulic fluid to the band valves and piston valves relative to though?

I have no idea. i can tell you alot about hoovering

[Dan]

just standard 1275's and 998's with stage 1 kits on em. Which do not need rolling road sessions.

Apart from being quite wrong about Stage 1 kits Alex (which do need to see the rollers, any kit vendor or tuner will tell you that) perhaps you would like to read my first post that you took such exception to again and a little more closely, you might find I already said exactly that. Cars don't just go on the rollers for a tune, they need to go on the rollers with a Stage 1 to get checked out. Whenever the tune is non standard you need to assess the entire rev range under load to make sure you aren't going to destroy the engine in a couple of thousand miles. Doing that on the rollers is easier than on a test drive. And the advance of a dizzy ignition is load dependant, that's what the vacuum unit governs. Not wanting to contradict Jammy here but it was because MLM did my car without the rollers that I was impressed. Not because I was impressed by the needle choice or profiling, I am fully aware that if you have a lot of experience then all you need to set up an SU is a good ear (and not a Colortune, it's pretty hard to keep your eye on the end of it on the back roads) which is how my dad does them. I was impressed by how accurate they were at adjusting the dizzy advance without a scope. They are amazing technicians but only because of the experience they have and the care they take. Professionalism means checking what you've done, not just assuming it's OK.

Edited by Dan, 10 March 2008 - 01:04 PM.

[imabitnaughtyxx]

just standard 1275's and 998's with stage 1 kits on em. Which do not need rolling road sessions.

Apart from being quite wrong about Stage 1 kits Alex (which do need to see the rollers, any kit vendor or tuner will tell you that) perhaps you would like to read my first post that you took such exception to again and a little more closely, you might find I already said exactly that. Cars don't just go on the rollers for a tune, they need to go on the rollers with a Stage 1 to get checked out. Whenever the tune is non standard you need to assess the entire rev range under load to make sure you aren't going to destroy the engine in a couple of thousand miles. Doing that on the rollers is easier than on a test drive. And the advance of a dizzy ignition is load dependant, that's what the vacuum unit governs. Not wanting to contradict Jammy here but it was because MLM did my car without the rollers that I was impressed. Not because I was impressed by the needle choice or profiling, I am fully aware that if you have a lot of experience then all you need to set up an SU is a good ear (and not a Colortune) which is how my dad does them. I was impressed by how accurate they were at adjusting the dizzy advance without a scope. They are amazing technicians but only because of the experience they have and the care they take. Professionalism means checking what you've done, not just assuming it's OK.

your lucky im a married woman ..... whatever you said i agree with. you dont want your car going up in smoke after you spent so much getting it on the road in the first place. Im rest assured now that all the bases have been covered and my engine is running at its best.

[alexcrosse]

yer your completely right dan, all stage 1 cars have to go on the rolling road to check every single rpm in the range or you will blow up your engine. After all, its not asif ive every tuned anything atall, or had any experience. I get asked on this forum of oppinions and facts, and i give correct answers. You do not NEED a rolling road for a stage 1 kit, if you want it that accurate you have to go to the rolling road every month to account for temperature change. And if you want to spend £80 every month on getting your carb right so you get 1bhp more and your engine runs 1 degree cooler, if that, then your looking to spend £960 a year on rolling road day, enjoy them.

and as for all bases of your engine being covered, did they check your bottom end on the dyno? no. Cam wear? no. They dont even take the rover cover off and check clearances in most places. All bases aint checked on a rolling road, just fueling and timing, it can also draw attention to oil burning problems which can be linked to mechanical defaults.

Edited by alexcrosse, 10 March 2008 - 01:14 PM.