[ocguyocguy]

I have been looking at some of these "Rev boxes" (CDI units) they sell on ebay and other places. I DO NOT want the extra revs but I am looking for the spark advance sooner in the RPM... anyway does anyone have experience with these CDI units? Do you feel the difference? Again I don't care so much for the over rev feature just how it pulls in lower RPM with the different advance. Thanks

 

[jojje1963]

I tried one on my Dyno, gained 0.5hp after 6000rpm. The main reason to use one is the extra rev so if you don't need that you should save your money.

And some people have had starting problems with them, others say they work fine. I don't know since I only tried it a few runs on the dyno

 

[ocguyocguy]

OK thanks for the reply. I'll skip the rev box. I have seen what you have done to Triumphs here on this forum...VERY cool! I know "your the man" for Triumph horsepower gains. Is boosting Triumphs your job or hobby?

 

[jojje1963]

Thanks,
It started as a hobby but I have a shop so I'm starting to make some money from it now, not yet enough to pay for my hobby though

 

[stu]

THe Procom unit advances the timing about 3.5 degrees thru the rev .range I picked up 200 RPM at idle, which maybe why hot starting is harder. I sent one back, the replacement seems OK so far.

 

[ocguyocguy]

About your Procom rev box...did your seat of the pants test show that the new box made the bike pull harder than stock in low or mid range? I'm not sure why your bike would idle higher. I was interested in low to mid torque gains not high revs. Jojje who answered me earlier has the obvious advantage of a dyno and he knows way more than I do...he saw only a 1/2 hp gain at high rpm.

I still wonder if the midrange torque inproved with this box.

 

[jojje1963]

I'm 99% sure it doesn't use the TPS signal, that's why you get a higher idle. Unplug the TPS and you get a higher idle with the stock box to, the TPS retards the ignition at idle (and only at idle)
A seat of the pants test isn't worth anything, I can program an ignitor so it feels like you gained 5hp at 4000rpm and up, even though you didn't gain any at all. All I have to do is to remove 5hp at the lower revs. I can promise that you would think you gained 5hp

 

[ocguyocguy]

Jojje,
Thanks for the reply. I wished you lived close by so I could check out your bikes...but since we are so far apart this forum is the next best thing...thanks for all your input.
I will skip the rev box idea...

I was wondering. I have put Staintune pipes on my bike, pulled only the side snorkel and rejetted to 125 main jets. No other changes, it was easy, inexpensive and I am very happy with the way it runs. I was wondering if you know how much more HP is available by going beyond what I have done and putting on a nark box and again rejetting...
I probably will not change from where I am at now...do to costs I was just wondering. Also do you ever plan to sell a "mild" turbo kit to bolt on a stock bike if that is possible?

 

[jojje1963]

A NARK should give you 7-8hp, it's the cheapest hp you can buy for your Bonnie.

A mild turbokit :-D there is no such thing, believe me.

One day I might make a kit but it's not as easy as it sound, building a bike is one thing but to make a bolt-on kit is something else. I understand why turbokits are so expensive.

What I can do is to build you a one of kit, I'll put it on my bike and then when I'm happy with it I'll take it off and ship it to you. It won't be very cheap but it would still be the cheapest way to get a 100-120hp Bonnie.

 

[ocguyocguy]

Jojje,
By "mild" turbo I was hoping a turbo that I could just "bolt on" if that is even possible with out extensive head gasket work...100 HP would be perfect. Is it possible to make a "Bolt on" type or does it require head and other work as well? I have rebuilt engines but I have no turbo experience other than driving torbo cars and they are the bomb...

OK I know I'll regret asking but what would this turbo "kit" your talking about cost? I know it requires alot of your time.

 

[jojje1963]

You can just bolt on a turbo and run low boost but it's not an good idea and nothing I would recommend. To do it right you need a Wiseco 904cc kit (more for the forged pistons than anything else) and a 2mm base gasket, nothing else other than stiffer clutch springs. If want more than 100hp you also need Carrillo conrods

Since all my "kits" include converting to EFI it would be at least $6500 including an exchange cylinder, 904cc pistons, adjusted advance curve and everything else you need. Bolt it on and you will have 100hp and 120NM at the wheel, or more. You won't even have to put it on a Dyno

 

[ocguyocguy]

$6500 is not much I know for all the time it takes to sort that stuff all out. You reall should look into marketing those for folks. I'll have to wait on that modification for now.
I bought this Triumph because it was what I liked and was afordable for me. I guess I need to stick to less expensive modifications. I have been thinking of one other thing.

Do you know anything about running ALCOHOL? What jetting to use? What are the negatives? I seem to remember alcohol runs dry, uses twice the amount of fuel per mile but it seems like an inexpensive HP gain if you only need to rejet. Does double the jet size sound correct? When I get to Sweden I am buying you what ever you like to drink or when ever you get over here same goes when we meet.

 

[ocguyocguy]

NEVER MIND my last question...I researched it and it is too much hassel except for drag racing...

 

[jojje1963]

On 2007-01-28 22:20, ocguyocguy wrote:
NEVER MIND my last question...I researched it and it is too much hassel except for drag racing...

That's only half true, methanol is too much hassle but Ethanol or E85 isn't, I run my dragbikes on E85. But to gain anything you need to up the compression on a NA bike, but on a turbo you will gain power even if you don't use higher boost (but you can ;-) . You need to flow 40% more E85 than gas, easy when you have EFI but not as easy with carbs.

Come on over, I'll drink that beer while you try one off my turbo bikes!
Cheers

 

[ocguyocguy]

Thanks jojje,
I'm savin up for that kit of yours now...