Taking a break from spending the day with the Blaster

[99LRDblaster]

Welp I got Holeshotman's leakdown tester in the mail the other day....nice setup. So, I decided to spend the day with the Blaster and tinker with it a bit and I'll be doing a leakdown test here in a bit. Took some more compression tests just for the kicks of it. I took the Trenga/LRD exhaust off and hit it with some Mothers. Looks a lot better now. I kind of decided to check out the inside of the engine and decided......what the hell....let's take some pics for the record and see how clean she is inside. I had my engine done by Hollywood Dirt and he polished all of the port/head surfaces, so I was thrilled to see no carbon build up anywhere....thing is spic and span running on Amsoil Redline and polished surfaces. So just for sh*ts and giggles I took some pics while I snack on some food.

Comp test 1: 170ish psi

Comp test 2: 175ish psi......if I took the filter off, I could probably get 180psi if I kicked enough

Stand you up on the kerosene heater since you don't have a grab bar and extended swingarm. Swapped out the shot 19" holeshots for the stock Dunlop 21" up front....in almost like new condition.

Exhaust is off and she is showing me her coochie.

I got creative and decided to fit my digital camera inside the frame and take some pics of the engine.....clean as a whistle minus the normal oil film...I can wipe it off with my finger.
TDC with the "rifled" exhaust port from my port and polish job.

BDC and I can see a bit of the head and head gasket.

Looks like the "propped"/"spiraled" and polished head is clean as a whistle too. These pictures were biatch to take from this angle.

So what happens when I actually put the camera lens into the port?

 

[99LRDblaster]

Still have no clue how Marc managed to machine this stuff when he did it. Maybe Ken knows. I don't.

Hey there......where did you bastards come from? B)

Best shot I could get of the head....you get the idea though....goes that way all the way around.

Off to bury my face in some spaghetti and meatballs then do the leakdown test....hopefully turns out good.

 

[specialized7]

ha cool, looks pretty clean!

 

[scotj77]

what is all this spiraling going to get you ?

 

[99LRDblaster]

what is all this spiraling going to get you ?

In theory, more efficient combustion within the cylinder from inside the head. On the exhaust port, air flow is scavenged out faster via a spiral(Think of a tornado spinning) into the exhaust expansion chamber. That's the theory at least. I went with the engine work after hearing about a dozen successful reports from other's that had Marc's work done. I can't get the f*cker out though until all the damn snow melts since I all I am doing is spinning tires everywhere. X(

 

[Braaaptor]

Look at this, y'all! Here's all the proof you need that AMSOIL is the best you can get. One very clean engine with no noticible carbon buildup. I'm a believer, I'll just put it that way. lol

LRD, I wanna see the results of this leakdown test. Whenever you finish getting all that spaghetti sauce off your face, that is. You may want to pressure up your leakdown tester prior to putting it to work on the engine. My Holeshotman leak tester had a small leak (in the tester itself) where the intake boot adapter was screwed together.

 

[darederek]

my friends had a leak too. if you have a leak make sure to spray the tester too!!!

 

[89blasty]

I can't get the f**cker out though until all the damn snow melts since I all I am doing is spinning tires everywhere. X(

get some woolybooger tires. i got them on mine it goes pretty good in the snow.those tires are amazingI:I

 

[99LRDblaster]

get some woolybooger tires. i got them on mine it goes pretty good in the snow.those tires are amazingI:I

Yea those a lot like 4-snows and have a similar effect to dune paddles in snow.

My razrs are pretty worn down to begin with, plus the extended swingarm centers less weight over the tires.

 

[89blasty]

Yea those a lot like 4-snows and have a similar effect to dune paddles in snow.

My razrs are pretty worn down to begin with, plus the extended swingarm centers less weight over the tires.

yea my suspensions all stock and i think it aint to bad. but nothing like my stepdads 450, + 2 arms, pep shocks and revalved rear it handles like a dream

 

[99LRDblaster]

yea my suspensions all stock and i think it aint to bad. but nothing like my stepdads 450, + 2 arms, pep shocks and revalved rear it handles like a dream

When it comes to being offroad in the snow, I realized that a 4x4 quickly makes a $25,000 sport ATV look slow.

 

[99LRDblaster]

Welp, after the longest leakdown test ever from lack of sealing and using a LOT of RVT, I have no leaks in the engine and step 2, 3, 4, and 5 are on the way.

Step 2 being cleaning and lubricating everything
Step 3 being rejetting the "stock" 30mm for my 60/40 mix of 110/93 octane
Step 4: Going off how she performs now with the higher octane gas if I want to keep the stock 30mm on or bump up(way up) to the 35PWK I have on standby....then if the I feel the need to fall in the middle either put a sleeve in the venturi of the 35PWK to get it down to 33mm or see if I can find a deal somewhere on a 33PWK.
Step 5: Making the custom airbox if I opt up for the larger carb

Looks like the whole time the lackluster performance(or so it seems) was because of too low of octane fuel. Will find out once it's dry out and get the jetting dialed in. I guess this vid can serve as an example of why the revs were always hanging.....wasn't because of an air leak....revs were hanging from pre-deflagration. You can hear the pinging most distinctly at 2:25 on.

 

[YFS101]

Criminalpoet and I both did work for Marc and his web site...
he wanted a branch up here in canada, liked my work so shared his specs with me so I could build a cylinder/head to his specs.. I also Ported the cases while I was it it. Or local Auto dealership had a dyno for emmisions testing and we used that for all our testing.
I did port and and tested a couple carbs and cylinders... its easy to get the swirl. Its all done by hand not machine

once the ports were to height we used a sharpie and marked the swirls and angles to make them as even as possible then using sanding drums and round stones and made the channels by following the sharpie lines.. Once the basic shape was formed we went over them with rubber abrasive bits and gave them the smooth finish, then polished them with brown compound on felt wheels and a dremal tool.
One area Marc and I always disagreed was polishing the intake port and transfers.. I prefer the textured finish he liked the bling

 

[darederek]

people always say that the exhaust can be polished to reduce carbon but the intake has to be a little rough to assist with atomization of the fuel. it makes sense..

 

[99LRDblaster]

Criminalpoet and I both did work for Marc and his web site...
he wanted a branch up here in canada, liked my work so shared his specs with me so I could build a cylinder/head to his specs.. I also Ported the cases while I was it it. Or local Auto dealership had a dyno for emmisions testing and we used that for all our testing.
I did port and and tested a couple carbs and cylinders... its easy to get the swirl. Its all done by hand not machine

once the ports were to height we used a sharpie and marked the swirls and angles to make them as even as possible then using sanding drums and round stones and made the channels by following the sharpie lines.. Once the basic shape was formed we went over them with rubber abrasive bits and gave them the smooth finish, then polished them with brown compound on felt wheels and a dremal tool.
One area Marc and I always disagreed was polishing the intake port and transfers.. I prefer the textured finish he liked the bling

Yea, I was always a skeptic of the intake at least. Didn't really care about the transfers so much. I kind of just went with it based on feedback and figured what the hell at however many RPMs, the carb is rifled, the fuel is getting torn to shreds as soon as it enters the venturi, bounces off whatever, thrown around the crankcase, then up through the transfers and out. At such speeds, it just seemed kind of semantical although I agree the rough intake probably aids more with atomization.

Interesting to hear how it was done though. Sounds like that would be a biotch to do and take a REAL steady hand to do uniformly....to me at least. I'm sure once you are used to it, it's no biggie.

What did you find in all your carb/port experimenting?