Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 5, 2020 19:51:01 GMT 1
As per title. just wondering if there anything like the pv in their power delivery.
Just curious cheers Rob
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Deleted
Deleted Member
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Post by Deleted on Aug 5, 2020 20:30:25 GMT 1
Any tuned 2 stroke is likely to lose something lower down the rev range then come in with a bigger maybe shorter bang later on The PV allows more extreme tuning and smooths the transition by keeping the exhaust port lower so the step doesn't seem as drastic, however the overall effect is more power all across the range So in answer to your question yes I have and no it isn't
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 5, 2020 21:06:34 GMT 1
Okay thanks for reply I'm pondering getting my lc barrels ported. I do like the characteristics of the engine as it sits with chambers and pods and wouldn't want to loose that. I'm guessing that getting the lc engine to 60plus hp is going to make it more of a lightswitch turbo lag powerband.
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Post by midlifecrisisrd on Aug 5, 2020 21:18:49 GMT 1
Not necessarily so
Instead of spending your money on tuning get an Ignitech and some good pipes
Should give a good improvement all over
Steve
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Post by Tobyjugs on Aug 5, 2020 21:19:06 GMT 1
I wouldn't say it's that extreme. It just makes it not so nice to ride on motorways as you have to rev it s bit more.
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Post by veg on Aug 5, 2020 21:27:34 GMT 1
Yes and no as phil says. Ive owned both and pv engined lc's , the 4L0 is a purer beast the pv is a more powerful engine as it should be with the development, depends on what you want and what your expectations are. My current is an animal but useless below 7K, once it gets its new pipes etc it'll be easily as powerful as a decent pv but different. Oh and i have no intention on riding it on the motorway.
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 5, 2020 21:29:09 GMT 1
Tobyjuggs I see you have or had a 70hp lc. Was it worth it?
Ill look into ignitech Cheers ๐
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Post by Tobyjugs on Aug 5, 2020 21:34:37 GMT 1
Tobyjuggs I see you have or had a 70hp lc. Was it worth it? Ill look into ignitech Cheers ๐ Yes.
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 5, 2020 21:40:24 GMT 1
๐ food for thought cheers guys bet you can't wait for them pipes veg? the ultimate lc engine is what I would imagine as the standard characteristics just cranked up x10
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Post by donkeychomp on Aug 5, 2020 21:43:45 GMT 1
Back in the 80's a mate had a stage 3 SS tuned 250LC. Compared to my standard bike it was chalk and cheese. His bike had no real power below about 7K then f**k me all hell breaks loose. Keep it nailed in all the gears (after second) and it was a ballistic missile. However...it did blow up a lot!
Alex
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Post by flames on Aug 5, 2020 21:59:05 GMT 1
My LC was tuned ( X race bike ) no idea how tuned or who did it but looks like fair bit of work went into it.it was supposedly de tuned for the road with a spacer and 2 base gaskets. When I got it it was awesome. Pulled cleanly from 3k, lifted front wheel in 1st and 2nd when the power came in at 7k or wheels spun if it was wet.3rd as well if I had someone on the back. Mine had a slight increase at 6.5k but didn't kick in properly til 7. Unfortunately after a Sunday lunchtime on Stella down the local , I decided to 're tune' the motor by removing the spacer and gasket. Never has been the same since.Even with a different top end. Whoever set mine up originally did a bloody good job.
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Post by st66 on Aug 5, 2020 22:06:33 GMT 1
The secret is getting it set up right,, I've had tuned two strokes in the past some good some shite as in no power low down or mid range but above 6/7000 ballistic,, these higher tunes are meant for Raceing, where you are flat out constantly in the upper rev ranges,, no good for the road at low to mid range,, hence its a ballanceing act,, to get the best all rounder, I've got full race barrels for mine but no way am I going to extract all of its potential for the road it will be hard work keeping it going below 30 in traffic rev its ass off and clutch wouldn't last long I'd guess,,unless your to the stops everywhere that is mate,, but I may be wrong hence like you I ask and the guys on here are cool enough to point the direction mate,
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Post by veg on Aug 5, 2020 22:10:19 GMT 1
If you want a 4l0 there is only one way to go a tz700 top end that has all the power all the pose and all the bragging rights.
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Post by veg on Aug 5, 2020 22:11:03 GMT 1
If it was good enough for Steve baker itโs good enough for me.
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 5, 2020 22:15:51 GMT 1
There is definitely a sweet spot to get everything working in sync with each other its like black magic the way the pipes carbs ignition porting all have to come together to make it work. Very interesting and addictive Expensive ha
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Post by veg on Aug 5, 2020 22:18:01 GMT 1
These things arenโt cheap but anyone can buy a gsxr-blade-R1-busa- blah blah blah. What people forget is what makes you smile? When Iโm warming mine up priceless when I stop somewhere what do people look at?
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Post by st66 on Aug 5, 2020 22:26:54 GMT 1
You really want that answered? Lol
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Post by flames on Aug 5, 2020 22:30:00 GMT 1
These things arenโt cheap but anyone can buy a gsxr-blade-R1-busa- blah blah blah. What people forget is what makes you smile? When Iโm warming mine up priceless when I stop somewhere what do people look at? You need to keep it in your pants when you stop then. ๐
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Post by tacky1 on Aug 6, 2020 0:43:28 GMT 1
Mine is pretty well opened up, 27mm ports, all boost ports opened and inlets with V-Force reeds and 28mm carbs etc, 1mm squish, lost a little low down but gained a massive powerband that never gets old Man that thing just screams when it get to 7k, Wouldn't swap it for the world, pulls mean and clean all the way into the red all the way through top gear with stock gearing.. Nothing like a well sorted smoker to put a smile on yer face My YPVS is basically the same port job, but has a lot more lower end, not as much as a powerband, I ride the LC a lot more than the YPVS, more fun
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Post by reedpete on Aug 6, 2020 17:42:53 GMT 1
Rob, My old proddy Race bike had tz750 port timing, backs cut out of the pistons to effectively make it crankcase induction and the thing was still very rideable. Being forced to remain with VM26 is part of that. IMO you can destroy a very rideable (then wild in the band) tune by having large carbs...
However if you currently have a set of stock or near stock carbs, it would be best to just find another top end. All reversible then. Alternatively get some ported 4L1 250 barrels ...full caboodle, full race, boysen ports etc. With some nice pipes you are guaranteed a โBotoxโ grin.....(takes a week to wear off) ๐
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Post by iwantalc on Aug 6, 2020 19:41:55 GMT 1
i had a 350lc that my mate use to race it was that quick he had to let off the power so not to be scrutineered will try and get the specs off the bike ??
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 6, 2020 20:15:06 GMT 1
Cheers Pete, yes I have the stock carbs I do like the idea of keeping these also.
Interesting you had kept original carbs but had full race port job and was very driveable still. Sounds like a route I am leaning towards although not as drastic porting. Tackys setup sounds good But so does a 70hp lc ๐.
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Rob123
Thrash Merchant
Posts: 379
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Post by Rob123 on Aug 6, 2020 20:18:00 GMT 1
Yes that would be great if you could ๐
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Post by reedpete on Aug 6, 2020 20:25:27 GMT 1
Interesting you had kept original carbs but had full race port job and was very driveable still. That was the proddy race rules. Bike had to look factory from outside. Carb boring was illegal, Supposed to still be 350cc, Head wasnโt supposed to be (look) skimmed, but plenty of scope to modify pretty much anything else.
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Post by bare on Aug 9, 2020 4:01:27 GMT 1
Tuner /nutter I once knew (in Los Angeles) had a 72 rear wheel Hp (on a real brake dyno ) out of his 350 lc. He used to tune and race TZ's.. Competitively.. so neither beginner nor bungler. LC had a hair thin power band ~ 1000 rpms wide @ ~10,000rpms. Right at the RPMS where the LC crank was at genuine risk. Difficult to ride.. as the power rush was too brief and too harsh, to be reasonably useful.. anywhere but in an all out race situation where it could be kept on the boil.. If sufficiently skilled. Care in what you wish for.
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Post by steeley on Aug 9, 2020 5:18:06 GMT 1
Had a Bob Farnham F2 tune on my 4lo years ago . It went well , went off like like a mad thing in the power . It was still nice to ride round out of the power . I ran std carbs bored out to nearly 28mm you have to watch the area the slide runs in can't remember the actual size they ended up at . Had foam filters and a ledar kit fitted and a pair of Nikon exhausts.Then i went down the road of a pair of Tzr 250 carbs bored out to 30mm what a dick dance to set up .In the end after one melt down and hours messing about with jets i put the other carbs back on and got rid of the Tzr ones .no more temptation .
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