Upping The Cc On My Mi16

[M_R_205 5 1 Cars]

Well my mi16 currently goes like the clappers, but only above around 4K, Now im after a little more low down grunt,

 

After doing alot of searching and reading i have found there is 2 or 3 ways of getting that extra few cc`s

 

iron mi16 block 86mm bore? and 1.9 crank 88mm stroke? resulting in 2045cc

 

gti 6 block 86mm bore?(and the posibilility of going to 87 or if im feeling risky and a bit wild 88mm) and a wide veriety of crank options,

88mm, (2045 with 86 bore, 2093 with 87 bore, and 2141 with 88bore)

92mm out of a 2.1 diesel 406? (86bore 2138, 87bore 2188, and 88bore 2238)

and a 96mm crank out a 2.2 406?? 89 bore 2231, 87bore 2283, and 88bore 2336)

 

Is it possible to use the block off a 2.2 406? as it has 85mm bore by 96 stroke and more than likely can be bored out to 86 or 87mm??

 

Also i read in a post (that i typiclay cant find!) that i could use a iesel block and bore i out up to 88mm, which block is this and out of which car?

 

So if anyone could confirm what i have posted and advise i would realy appriciate it

 

Thanks

Paul.

[carbers205 1]

The cheapest and easiest option is also the one with less increase, dropping a diesel crank into an 86mm block and getting 2045cc, I did this by using all the standard 2.0 parts but skimming 1mm off the piston crowns, however this was on the 8v so I cant comment on valve/piston clearance in the mi. The increase in capacity and compression gave what appeared to be a hefty shove of extra torque though.

As far as your other options go, I know one of the diesel cranks (96mm I believe) has a different end float to the others so consequently different rods would be required.

The 2.2 406 engine is an EW not an XU so you will find compatability issues with the head.

Thats all I can remember off the top of my head now!

[welshpug 1,661]

gti6 and Mi16 iron blocks are pretty much identical, the cranks are exactly the same (part number and all), everything else bolted to them is different.

 

2044cc IIRC is the capacity when an 86mm crank is used, the other capacities you listed sound right.

 

92mm iirc is what Dr sarty runs at 87mm.

 

2.2 406 is an EW engine, not sure how compatible the parts are with XU engines, but as far as I know the 96mm crank will fit the XU block, some camshaft manufacturers listings seem to suggest that the EW and later XU (as in J4R/RS) cams are compatible.

 

they are an alloy block with dry liners, afaik they have a steel sleeve cast into the block similar to the B16B honda engine, not sure if this can be bored out at all, but at 2230cc (iirc) I don't see why you'd want to bore one out as standard they are the same head as the 180, with the VVC but 20 bhp less at 160 which I htink is due to the bolt on bits like cams and manifolds.

 

They do produce good torque (as do the 180 when mapped properly, see Magic's thread on aussiefrogs) and I think do have potential that is as yet untapped, i'd like mto see one of these in a 205 complete, a 2.0 version has been done, so they main pitfalls have been covered already.

 

diesel block would be anything peugeot/citroen 1.9 TD, don't know if this can be bored out that far, engine mount drilling's are an issue with these.

Edited April 10, 2010 by welshpug

[blessed6383 0]

i have my 1.9mi fully rebuilt with uprated piston and rods, all lightend and balanced bits, with bigger valves and kent fast road/rally cams and ported and polished head and a dew other little bits for around 4 1/2k and it goes like a rocket

[qwerty 9]

i have my 1.9mi fully rebuilt with uprated piston and rods, all lightend and balanced bits, with bigger valves and kent fast road/rally cams and ported and polished head and a dew other little bits for around 4 1/2k and it goes like a rocket

 

 

do you know what power your running with these mods?

[petert 588]

Cheapest and easiest in my book is to drop your Mi16 crank into an S16 block. Depending on the condition of the S16, you could either leave the std. pistons (but you'll need pocket work) or fit new 86.50 or 87.00 forged pistons. Add your current head/cam setup and you'll have an easy 220+hp setup with ample torque. CR will be approx. 11.2:1, an excellent match for your inlet cam.

[DrSarty 90 1 Cars]

Some 'upped CC' project threads are:

 

1) 8v using XUD block overbored to 88mm IIRC (or 87 at least) is WARDY

2) 16v using XU10 block but without overboring IIRC is DOOF

3) 16v using XU10 S16 block bored out to 87mm (i.e. 2187cc) is me, and the link's in my signature

 

PeterT's suggestion sounds the most logical and least painful to me, as once you're using forged pistons, you can add nearly £750 to your build price, especially if they need pin height modifications.

 

I am still not convinced that the EW12 96mm cranks fit an XU block. It has a toothed balancing wheel on it that needs removing and I think will need work to make the rods you need fit. As stated, the whole engine being used is a much better idea, as many of us feel there is untapped power in there, PLUS a huge 28kg weight saving via the sleeved alloy block. Sarty maybe doing something along these lines, so watch this space.

 

My tandem engine build projects are the way I'm going in future. Mostly standard parts, just eeking out more power and torque through increasing CR and clever cam choice and timing, basically the 'OE plus' style of tuning.

[M_R_205 5 1 Cars]

Well this may start to turn into a project thread shortly as i have just taken delivery of a 2.0l iron block mi16 short engine, it was nice and cheap so i decided to buy it regardless if i use it or not,

 

I pulled the sump off to find a plastic trap door arrangement in the (steel) sump something i wasnt expecting to find!! When i get back home tonight il take the rest of the engine apart and see what sort of condition it is is, but so far it all looks good...

 

Paul.

[M_R_205 5 1 Cars]

How the hell do i get the cam belt pulley off the crank!!!! Am i missing something or am i just to puny!!

[Sandy 191]

The nose on the EW crank is different, becausde the oil pump drive is direct, in the front cover. (Doing my first EW at the moment!)

[M_R_205 5 1 Cars]

The nose on the EW crank is different, becausde the oil pump drive is direct, in the front cover. (Doing my first EW at the moment!)

 

 

In that case then i assume the 96mm EW crank will not fit the xu block, at least not without a lot of machining...?

[Hilgie 16 2 Cars]

I've looked into this ages ago, and it does fit but requires a lot machining to do so. At that time is was cheaper fitting a 1.9 diesel crank (88mm stroke) into the S16 block.

[Sandy 191]

Revision to my earlier post.... The oil pump drive on the EW crank is not part of the crank, it's pushed on and can be removed! We live and learn