Mini Carb...

Post by **Multiphonikks** » Tue Nov 23, 2004 6:44 pm

Just to clarify,

what would I need to take the carb off a scrap 1098 mini and put on hebe?... I've found several *nice* carbs, including one with a nice HF air filter in a scrapyard, and as my carburettor is in need of some tlc....

Nikki

Post by **Alec** » Tue Nov 23, 2004 7:32 pm

Hello Nikki,
it may be easier to give your existing carburettor an overhaul. I think I'm right when I say the 1098 Mini carburettor is an HS4 and will not fit the Minor manifold. You will need a replacement inlet manifold and hacksaw off the inlet manifold part of the Minor combined inlet and exhaust manifold. The alternative is to fit a tubular exhaust manifold and an after market inlet manifold.

Alec

Post by **Cam** » Tue Nov 23, 2004 8:21 pm

Nikki, if you get the tubular exhaust manifold, alloy inlet, HS4 or HIF34 carb then get a AAM needle and Hebe will really fly!!! prob about 20% more power!

The HIF4 was also fitted to the 998cc Mini 1000 which are MUCH more common than the 1098cc Minis

Insurance need to know though about any modifications.

Post by **Multiphonikks** » Tue Nov 23, 2004 9:02 pm

How much is the insurance likely to go up? Any ideas? Based on the fact that although I've just turned 25 I have that claim from when I spun Hebe....

I am certainly tempted... any idea how much I should pay the scrappy just for the carb?

Post by **Cam** » Tue Nov 23, 2004 9:05 pm

carbs are about a tenner from scrappys in Stoke.

BUT like Alec says, it won't fit the Moggy inlet. The mountings on the HIF4 are offset (almost diagonal) whereas the Moggy ones are vertical.

No idea how much it will put your insurance up by....... never tried to insure a slightly modified 1098. I'm sure someone else on here will be able to help more (or at all!

)

Post by **Alec** » Tue Nov 23, 2004 9:14 pm

Hello Nikki,
if you are on a Classic Insurance policy, I would not expect very much, if any policy increase. [I would ring them up in the first instance.
As Cam says, a worth while increase but not a cheap route, the cost of the carburettor being a small part of the equation. Cheapest route is to saw the existing manifold and look for a second hand inlet manifold (Ebay?)

Alec

Post by sb » Tue Nov 23, 2004 9:50 pm

niki, upgrading from the 1098 to a 1275 puts my insurance up by %25.
I assume thats based purely on increased BHP. When i enquired about mods to a standard mog no increase at all! Peter Best insurance
cheers, sb

Post by **andypocock** » Tue Nov 23, 2004 11:48 pm

Cam wrote:carbs are about a tenner from scrappys in Stoke.

Yes but a 3 bed semi is only about £20K

Post by **Cam** » Wed Nov 24, 2004 12:34 am

Not been there recently then??

Post by **d_harris** » Wed Nov 24, 2004 1:37 am

Insurance increases seem to depend on the company, some will jump 6ft in the air as soon as you suggest minor mods, others don't increase it much until you start getting into silly mods. When we rang footman james about mods (we ultimatly didn't do - nothing major, discs + 5 speed etc) they said there would be no increase

Post by **Stig** » Wed Nov 24, 2004 8:35 am

I put a 1.0 Metro carb (HIF38), MG Metro inlet manifold and tubular exhaust manifold + S/S exhaust on a few years ago -definitely more vroom! I did try grinding off the inlet part of the original manifold but went through to the exhaust bit so take care if you're planning that approach. Not sure how changing the carb vs. changing the exhaust affects power/economy as I ended up doing both at once, but I also get about 10% better MPG. Cake & eating it.

I'm insured through Aon, told them about the mods and it didn't seem to affect the premium.

Post by **Peetee** » Wed Nov 24, 2004 9:47 am

When i enquired about mods to a standard mog no increase at all! Peter Best insurance
cheers, sb

Exactly the same with me. Disc brakes, anti-roll bar, Midget head and 1.5" carb, metro seats. Peter Best didn't up the premuim one penny.

Post by **Kevin** » Wed Nov 24, 2004 10:37 am

Petee which Midget head did you use and if it was the 1275 did you have to pocket the block at all.

Post by **Peetee** » Wed Nov 24, 2004 2:04 pm

Gas flowed 12G295, skimmed 60 thou.

Post by **picky** » Wed Dec 22, 2004 11:35 am

Hi Nikki,
Ive been mildy uprating my 1098cc moggie, and I managed to cut the inlet manifold off the exhaust with a hacksaw in about 30 minutes... The inlet manifold was useless but the exhaust piece works fine, if you get the inlet manfold of a mini or similar to fit your mini carb. Ive now fitted a maniflow LCB exhaust so I dont need the cut off exhaust manifold any more.

Try and find the exhaust manifold off a small engined midget, as they are exactly the same as the minor one but without the inlet on top. I realized this after I had hacked about wth the moggie one!!

Ebay is a great place for moggie stuff by the way.
Hope this helps,
Tim

Post by **Kevin** » Wed Dec 22, 2004 6:28 pm

Try and find the exhaust manifold off a small engined midget, as they are exactly the same as the minor one but without the inlet on top. I realized this after I had hacked about wth the moggie one!!

Much easier to use a mini 1000 exhaust manifold as its the same size, and I would have thought a 1098cc midget manifold quite hard to come by and are you sure its the same bore as the 1275cc one wont fit, and the effort to remove the inlet of the minor is not to bad.

Post by **picky** » Wed Dec 29, 2004 5:39 pm

hi kevin,
Yes the midget exhausts dont grow on trees, but I've seen one or two come up on ebay now and again. The advantage of using the midget manifold as oppose to the mini one is i think that the mini 1000 exhaust manifold is one piece with the inlet, so you get a hotspot that loses BHP. Yes the 1275 ones are different I think. As quite a few people here are modifying their moggies I wonder if anyone would like to give thier opinion on what I hope to add to my 1098cc motor. (already has HS4 carb, MG metro inlet, Maniflow LCB system)

649 Leyland ST profile camshaft

Minispares lightened cam followers

HIF 44 carb

gas flowed 12G295 head (if I can find one)

lightened adjustable duplex timing chain set

Lucas sports coil

magnetic sump plug

I can imagine this will have stirred up some comments among you, so get typing!
Tim

Post by **Cam** » Thu Dec 30, 2004 1:15 am

HIF44 might be a little large and you may loose a bit of low down power due to the decreased inertial ramming effect. I would go for a HIF38 or HS4 myself.

I would not bother with the lightened cam followers, BUT I would get a set of 1.5 roller tipped rockers.

I would go to 10:1 compression and get big valves fitted in the head and get it ported by MED racing engines. They are not cheap but do a fantastic job, especially Simon who ports the heads (nice bloke too).

Not much point in the 'lightened' or 'adjustable' duplex chain kit. Just get a normal duplex one.

Lucas sports coil won't really do a great deal but I would use NGK BP8ES plugs if you are going to 10:1 compression.

Magnetic sump plug is always a good idea!

Get the bottom end reground and balanced and tuftrided/nitrided. Get some decent pistons too (Omega if you can). Oh and if you are planning to turn some high revs (7000 and over) then get a centre strap for the middle main bearing.

I would also go for the Kent 276 or 286 cam but it depends on what you want.

If it's just for fun then go for the 286 but in a 1098 it will be a right pain in traffic!

Get an Aldon Yellow dizzy with built in Ignitor and the Aldon coil to match.

It all depends on budget and what you want out of the engine. If it's pure race or combined or track or sprint etc, or just mucking about and annoying boy racers!!

Post by **picky** » Thu Dec 30, 2004 11:56 am

Thanks cam for your advise, its appreciated

Most of this stuff ive picked up on ebay and I'm not sure I can afford to have the head modified by MED, do you know how much they would charge for a bit of stage 1 or 2 porting? I've got David Vizard's book and I fancy having a go at porting myself, Any advise on that? not sure how much to have it skimmed to bring up the compression ratio either. I'm using the 649 camshaft because I got it for £15 on ebay from someone who didnt know what it was. With this spec, will the standard crank snap or what? because I cant afford to have it balanced etc. I'm looking to build a useable road engine, and beating nova's at the traffic lights sounds good

Thanks for your help,
Tim

Post by **picky** » Thu Dec 30, 2004 11:57 am

Thanks cam for your advise, its appreciated

Maybe I'll go for a HIF38 then instead of the 44. Most of this stuff ive picked up on ebay and I'm not sure I can afford to have the head modified by MED, do you know how much they would charge for a bit of stage 1 or 2 porting? I've got David Vizard's book and I fancy having a go at porting myself, Any advise on that? not sure how much to have it skimmed to bring up the compression ratio either. I'm using the 649 camshaft because I got it for £15 on ebay from someone who didnt know what it was. With this spec, will the standard crank snap or what? because I cant afford to have it balanced etc. I'm looking to build a useable road engine, and beating nova's at the traffic lights sounds good

Thanks for your help,
Tim

Morris Minor Owners Club

Mini Carb...

Mini Carb...

Splitting the minor one peice manifold