Are you worried about your V1 head temps?

Get yourself an italjet m50 with a Minarelli G1 and steal the head off it, and you'll be the coolest in town.

(Front facing carbs may be an issue...)

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Re: Are you worried about your V1 head temps?

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Big head club 2021

Re: Are you worried about your V1 head temps?

โ€œThey said I could be anything when I grew up, so I became a Maico.โ€

Re: Are you worried about your V1 head temps?

You worried about wind drag with that thing? Lol.

Re: Are you worried about your V1 head temps?

Haha, never, my next project is going to make big power with a titchy wee head

Re: Are you worried about your V1 head temps?

The stock head works excellent with the V1 and a polini, with no head gasket. I got one of those "custom cut super street" airsal heads and it sucked.

Put this Record head from a P6 on (sideways) for the hell of it. Works great!

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Re: Are you worried about your V1 head temps?

Tweaker trash /

> baird co Wrote:

> -------------------------------------------------------

> The stock head works excellent with the V1 and a polini, with no head

> gasket. I got one of those "custom cut super street" airsal heads and

> it sucked.

>

> Put this Record head from a P6 on (sideways) for the hell of it. Works

> great!

Haha I made a huge domed head from an old puch head & thrue on my tomos and holyshit!

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

Metra80 head or the really fancy $100 CNC aluminum head really do a good job.

Airsal head is okay but BRN or TEAM head are both better than it

Re: Are you worried about your V1 head temps?

Never had a big problem with the few unmolested v1 bottom ends I have polined with various pipes and carbs and realy beat the snot out of. Never got hot and have soft siezed many times but I don't realy shred the shot out of my engines. V1 is the best moped engine hands down. Anyone can toss a polini on a v1 with pipe and carb and go fast. No need to rebuild. Kit and go

Re: Are you worried about your V1 head temps?

Oh and baird is a firm believer in brass little end. I think he is right with that? Never realy had a v1 bottom end go south so the needle top ends go then it just blows everything to shit. Just be careful when your clutch starts to stick. That is the point when you are like shit is getting hot

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

I've def shattered a brass little end with a Eurokit

also had a polini kit that would hit 520 and not care or even come close to seizing, still have it but I think I blew the piston on bakers in another cylinder trying to stay in the race

you just gotta season it rite and then its good2go forever just like a cast iron pan

Re: Are you worried about your V1 head temps?

> ๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin Wrote:

> -------------------------------------------------------

> you just gotta season it rite and then its good2go forever just like a

> cast iron pan

Instructions unclear, engine does not run on flaxseed oil. ;-)

Re: Are you worried about your V1 head temps?

> Brian F Wrote:

> -------------------------------------------------------

> > ๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin Wrote:

>

> > -------------------------------------------------------

>

> > you just gotta season it rite and then its good2go forever just like a

>

> > cast iron pan

>

> Instructions unclear, engine does not run on flaxseed oil. ;-)

Haha I think if you realy baby it and do the up and down rpm thing it will last for ever. RIP on it but when you are slowing use the throttle and come down with the rpms. Use the crappy clutch like a down shift. Just rip and rev down.

Re: Are you worried about your V1 head temps?

I never break them in. I've put polinis on and raced them the next day, running revs up to 11k for two days straight.

Never soft seized one, and the only one I messed up was when the circlip busted on the piston, and the cylinder just had a little scuff. Still running that one on my 53mph Cimatti.

And yeah, big fan of the bushing. Never had one blow yet. But I don't have thousands of miles on my bikes, but my race bike has 67 hours on it. 95% of that on the track. Still looks new inside.

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

My favorite polini kit I still have, it's the first one I bought in like, 2005 or 2007 or something

Soft siezed it like 6 times, it's sat in the rain for a few months, gone through a couple rebuilds and a couple pistons (2? 3? Idk)

It runs great I have it on my most reliable bike, never gets above 395 even on a long East Bay hill

Re: Are you worried about your V1 head temps?

There's actually a hidden purpose behind this post.

I want to see if it's possible to mount the head and cylinder from a G1 to a V1 using a spacer. Basic measurements say yes. Just waiting on the spacer from treats.

The G1 is a mostly vertical, single speed engine, and P4 and P6 kits will fit on it.

They make 80cc kits in 17,20,24 and 27 hp.

27hp...

Imagine a V1 with 27 horsepower.

Again. Imagine having 4 times more horsepower than a polini kitted V1, which claims 5.5hp. and you can still mount it horizontally on a moped, with no major frame mods, by just making an intake.

Now imagine pulling up on someone that says "my Tomos with a biturbo does 50mph..."

And if you're asking, "why the hell would you want a 27hp (or even just 17hp) moped?

The answer is "why not?"

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

It should work yah

Same con rod and same stroke

Re: Are you worried about your V1 head temps?

Yup. I could also revisit the 50/50 idea, and use a Minarelli compact system top end.

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Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

V1 is great like that: just add a spacer and you can put any kit you want on!

Re: Are you worried about your V1 head temps?

If my plan works out, I'm gonna make the fastest V1 on the planet. And I just noticed treats sells drag race slicks. Time to re-up my health insurance.

Re: Are you worried about your V1 head temps?

Nice. Tony from HnRz was talking about taking one to bonneville at one point, build a custom frame thing and everything. Not sure how fast he got it going.

I'll post up something I've been working on soon that will be relevant to your interests.

Re: Are you worried about your V1 head temps?

A 12 pin minarelli vertical cylinder will be in my future, I think it would even work with the cooling shroud with a bit of trimming. I also have a V1L I might one day put the 70cc liquid cooled speedfight kit on.

Re: Are you worried about your V1 head temps?

Yup!

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I'm gonna build a lil scoopy boy to extend the shroud and use the scooter head.

Dos has these kits, I don't know the brand maybe metrakit I heard? They are really nice and have a nice 10 pin piston so I'm just gonna run the 12/10 adapter bearing. I bought a taiwan 12 pin piston for a minarelli H generic 47 kit and it's a good fit but feels a hair snug.

Porting on this thing is pretty nasty, I'm gonna make some spacer eventually.

Re: Are you worried about your V1 head temps?

Link to this adapter bearing? Treats has the spacer from space in two varieties, I think one is 19 the other is 20 something. Also I have both v1 and v1l cranks laying around.

Re: Are you worried about your V1 head temps?

Yeah both of the treats spacers are wrong, don't remember the sizes off the top of my head but I wanted to cast it with the ports right out of the box.

Scooter places sell the bearing, pretty common since most of the yamaha motors and kits for the jog are 10 pin and the china/korean motors are 12.

Also gotta clearance the cases or the piston his at bdc. I can take some more pics when I'm back in the shop tonight.

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

The spacers are correct but not for speedfight kit

They originally came from Carlos Cativa in south America and I gave that unit to treats to replicate.

If fits some kitz, but not all. I'm planning on using a GPR cylinder but I haven't touched that project in a bit

Re: Are you worried about your V1 head temps?

The P4 and 6 have a 19.7mm cylinder sleeve depth, so hopefully that spacer works perfectly. I'll have it tomorrow, so I'll know soon. But the Batavus parts are coming too, so that's up first.

Re: Are you worried about your V1 head temps?

Yeah this isn't speedfight, this is the minarelli vertical kit, aka 'mbk booster' aka first gen zuma (before they came to USA) ... It's not even close to either of the treats spacers.

The biggest advantage is that it's really the only cylinder-reed inducted kit that's even close to fitting on a moped. It is a 40 stroke but nothing that can't get fixed with some porting.

Re: Are you worried about your V1 head temps?

I have a very lightly used vertical jog malossi MHR replica kit for sale.. if anyoneโ€™s interested.

$150.

Rare as hell

Re: Are you worried about your V1 head temps?

๐Ÿ‡ฎ๐Ÿ‡น๐Ÿ’ฆ Of the Loin /

Oh gotcha, yeah neither of those spacers were designed for that kit.

One is to put 43mm stroke kits on and idk what the other is for (the original spacer from space came with a seperate square riser plate)

it was originally intended for multiple kits that were available in South America but idk what else

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