2.0 Conversion LCR

[aidy.t]

I hope you can help me, i am looking at increasing my capacity from 1.8 to 2.0 whilst having a Jabba IHI conversion done. I want to know your thoughts on this? Do i keep the capacity the same but uprate internals ie rods valves etc and also have the head flowed or do i go for the full blown 2.0 conversion with new crank and pistons. What sort of power gains willl i expect and is it worth paying the extra money.

 

[TllEWL]

Sounds expensive


Others have managed 400bhp (maybe ) out of it as a 1.8

 

[cordobabrendy]

i think bill etc had a 1.9 conversion, 2.0 is maybe too much.

 

[aidy.t]

Sounds expensive


Others have managed 400bhp (maybe ) out of it as a 1.8

Thats the problem it is expensive, i dont know if i can justify the extra money. i know songmans LCR is producing 368bhp which in a front wheel drive car should be more than enough. It would be nice to acheive 400bhp, 400lbft out of a 1.8 but i dont know if a VF34.20 can go up to that much horsepower and torque! I dont really want to go to any bigger turbo as i will have a lag issue and i want to keep the car driving pretty much the same apart from a lot more POWER!!!

 

[ibizacupra]

is a 2ltr motor going to be able to flow enough thru an IHI P20 housing?
Dans 2ltr A3 quattro is waiting mapping so no results yet, but this runs bigger, higher flowing turbo.

torquey

 

[aidy.t]

is a 2ltr motor going to be able to flow enough thru an IHI P20 housing?
Dans 2ltr A3 quattro is waiting mapping so no results yet, but this runs bigger, higher flowing turbo.

torquey

What turbo is that running? I still want the car to be a daily driver and i am worried that it will have too much lag going a bigger turbo than a IHI. The guys at Jabba tells me that they have done a 2.0 conversion on a golf with i think a IHI P20 and that is producing over 400lbft!! I dont want to get into a big turbo discussion as i know i want an IHI VF34.20, but what i do want to know is do i go for 2.0 or not ,what gains if any will i get and also will it be reliable?

 

[ibizacupra]

What turbo is that running? I still want the car to be a daily driver and i am worried that it will have too much lag going a bigger turbo than a IHI. The guys at Jabba tells me that they have done a 2.0 conversion on a golf with i think a IHI P20 and that is producing over 400lbft!! I dont want to get into a big turbo discussion as i know i want an IHI VF34.20, but what i do want to know is do i go for 2.0 or not ,what gains if any will i get and also will it be reliable?

The golf was largeport AGU 2ltr on VF22 if its the one i remember. big torque but not big power as airflow is choked I believe from the exhaust housing sizing and or manifold. its spool was significantly sooner than 1781cc and torquey as hell. Traction would be an issue no doubt.
You say you dont want to discuss BT but its linked to the capacity is'nt it. Bigger capacity will allow bigger turbo for same spool...
Will it be reliable? Good question.. why should'nt it if done properly and mapped within limits, and driven with respect.

Dans was a TD0620G based unit I believe. much bigger turbine and exhaust housing than an IHI.... big time... no back pressure there unlike VF34/20

 

[ibizacupra]

some crank info here... same crank as in that golf 4 and dans
http://www.eurospecsport.com/eurocrankshafts.htm

some of these as well from here> http://www.eurospecsport.com/pistons.htm
EFP 107 1984 5V 8.5 82.5 92.8 1984 144 20 29.36 8.5:1 Dished $795
EFP 107 1984 5V 9.0 82.5 92.8 1984 144 20 29.36 9.0:1 Dished $795

1984cc motor should go very well.
wondering if smallport is ideally matched to that potential tho

 

[aidy.t]

The golf was largeport AGU 2ltr on VF22 if its the one i remember. big torque but not big power as airflow is choked I believe from the exhaust housing sizing and or manifold. its spool was significantly sooner than 1781cc and torquey as hell. Traction would be an issue no doubt.
You say you dont want to discuss BT but its linked to the capacity is'nt it. Bigger capacity will allow bigger turbo for same spool...
Will it be reliable? Good question.. why should'nt it if done properly and mapped within limits, and driven with respect.

Dans was a TD0620G based unit I believe. much bigger turbine and exhaust housing than an IHI.... big time... no back pressure there unlike VF34/20

My worry about all of this is that i cant afford to have anything go wrong and my big worry about the 2.0 conversion is that the engine would be at its limit. And that it may have piston slap when cold if it hasnt got OE parts etc. I know the std pistons and crank are very strong and realiable.How comes you havent gone 2.0 in your ibiza? Jabba only do IHI at the moment ,but what do you reccomend?

 

[ibizacupra]

I am restricted by c'ship to std stroke hence 83mm is what I went for. JS do 82.5mm as their 1900cc version.
It may have piston rattle from forged pistons (JE) anyhows.

There should be no reason why goign 2ltr should make it go wrong if done right as I said. If thats a concern cos of potential ££ to put it right, you should ask the many IHI peeps out there what costs they have incurred since converting to keep them on the road. Capacity increase wont liekly be one of the concerns I dont expect, but other stuff may well be.

Why do you want 2ltr?
you want bigger torque?
its going to cost you a lot more if you have'nt already priced it up from them.

 

[aidy.t]

I am restricted by c'ship to std stroke hence 83mm is what I went for. JS do 82.5mm as their 1900cc version.
It may have piston rattle from forged pistons (JE) anyhows.

There should be no reason why goign 2ltr should make it go wrong if done right as I said. If thats a concern cos of potential ££ to put it right, you should ask the many IHI peeps out there what costs they have incurred since converting to keep them on the road. Capacity increase wont liekly be one of the concerns I dont expect, but other stuff may well be.

Why do you want 2ltr?
you want bigger torque?
its going to cost you a lot more if you have'nt already priced it up from them.

I feel that going 2ltr, i will get the desired power i want from the engine, my goal is aroung 380 bhp but more importantly the torque to be around the 400lbft + mark. Do you think this is possible then from a 1.8? I have only had a quote for strengthning work ie rods, valves and getting the head flowed. Jabba tells me the crank will be around the £1000 mark. Songmans LCR seems very reliable with the IHI set up.

 

[ibizacupra]

aside from a replacement turbo from probably caused by a non functioning DV yea, songmans has from his own forum posts been reliable.

$1200-$1300 for eurospec crank ~ £684+vat, duty & carriage (ish)

I dont think those figures are unachievable, but would wonder what boost would be used to achieve them from VF34.

The 2ltr crank is lighter than stock one I think Dan said, so does sound nice. If I was'nt restricted to bore increase only from my c'ship, I would consider one for mine with its larger flowing turbo/cyl head for sure. - downside is all that torque thru front wheels is going to clip its actual real road performance a lot I think, judging on what mines like with less torque, but more power. If damp... spin tastic in every gear.

 

[aidy.t]

Sounds very entertaining! Youve been very helpfull on this subject Bill, thankyou. Ive now got a lot too think about.

 

[myk3]

im getting a bore to 83mm (nearly 1.9ltr) ill let you know

 

[Songman]

I hope you can help me, i am looking at increasing my capacity from 1.8 to 2.0 whilst having a Jabba IHI conversion done. I want to know your thoughts on this? Do i keep the capacity the same but uprate internals ie rods valves etc and also have the head flowed or do i go for the full blown 2.0 conversion with new crank and pistons. What sort of power gains willl i expect and is it worth paying the extra money.

I am tempted to ask if you are having a diff fitted as well as all the engine work - you will certainly need it!

I kept my engine at standard capacity because it was relatively new, nicely run in, and for road use, with the IHI, the setup is quite adequate for my needs - you can see how my car performs by checking the link by the signature below.

The extra capacity will give you the ability to use a turbo unit with the potential to produce more power than the IHI, if you really feel you need it - there are a number of new ideas in the pipeline.

I,as everyone knows by now - am an unashamed fan of the IHI, for road use.
I am so pleased with my car the way it is - for me its the best `modded` car i`ve ever had, simply because it is such a balanced `all round` effort - very much lke the standard car `on steroids`

Many times in the past i`ve had `super hot` jobs which were great for a spin round the local bypass, and that was it - but 25000+ miles a year! - you could forget it! - I just got bored with them because they were too unreliable/ rough/ thirsty/ noisy/uncomfortable - all in all just not for me.

I`ve no aspirations to be a racing driver - I know my limitations - the Leon is my `shopping car`, and anyway, 99.9% of my mileage is on the road, in normal traffic situations where factors such as top gear performance and fuel consumption are major considerations - and, after the experience of 35000 miles `fun miles` I can say that for me the IHI fits the bill perfectly.

I quite accept that i`m now on the lower rungs of the BT power stakes, however I don`t think my car could ever be regarded as `slow` by any means - on the very rare occasions it is possible to use its full top end performance `safely` - and I use that word in the broadest possible sense - I always find it acquits itself very well in the company of far more prestigious oposition.

Of course as I`ve said before, `more is often less` as far as FWD power goes, and i`m honest enough to say that there have been times when i`ve been left looking like a right `wally` - understeering, torquesteering and wheelspining my way along the road in the lower gears in a vain attempt to keep pace with a well driven hot hatch with half the bhp of the LCR

Outright power is never the problem with the 1.8T - traction is always the Achillies heel with the FWD LCR - it`s easy to squander your `100 bhp advantage` with an ill considered `twitch of a right foot`

I intend keping the car, so I will no doubt have to rebore it at some future date, but that will be only as a consequence of maintenance, not as a search for more power.

Arch `petrolhead` that I am - I have not however forsaken the quest to experience even greater levels of BHP, but it`s FWD/Turbo no more - my next automotive project looks like having 150 bhp more than my LCR has now - but it`s RWD/normally aspirated.
I`m just off to see my Bank Manager - begging bowl in hand

 

[dan-ish]

1.8 crank to eurospec.

82.5mm JE piston to suit 2.0l conversion

 

[myk3]

you want a 92.8mm crank (from a 2ltr) around £500 for a good new forged one.

custom pistons JE are good... 83mm with the wrist pin moved up in the piston 3.2mm, this will compensate for the extra throw in the crank at the top ant will keep it in line and wont smack the vavles. cost about $600 from the USA posted.

some good 144mm rods, i got scat. around £240 posted from usa

put all of those bits together and you will have 2008cc engine.

then tweek the fuel with lemmiwinks. using vag com to log.

 

[aidy.t]

I am tempted to ask if you are having a diff fitted as well as all the engine work - you will certainly need it!

I kept my engine at standard capacity because it was relatively new, nicely run in, and for road use, with the IHI, the setup is quite adequate for my needs - you can see how my car performs by checking the link by the signature below.

The extra capacity will give you the ability to use a turbo unit with the potential to produce more power than the IHI, if you really feel you need it - there are a number of new ideas in the pipeline.



To be honest with you Songman, going 2.0 ltr,s, is only something that has only recently crossed my mind and until then i was intending keeping the original pistons, crank etc as the originals are very strong. And also my engine has only just run in.
I am a huge fan of Torque! "it is very addictive" and when i was speaking to Elton and Nick at Jabba they told me about this golf they had coverted to 2.0ltr's, and that had quite easily over 400lbft ,which got me thinking.
I know how reliable the IHI is and that,s what appeal's. And with your own forum about the IHI conversion, has helped me make that choice.
I think for now though, will be going the same route as your good self with uprated internals which should keep the costs down! But there is one question i would like to know and that is , is the Turbo running at its full potential, 1.7Bar?, or could you possibly run it a little higher so i could acheive my goal of hopefully 400lbft! . I know you say more is often less, but it is good fun trying though!

 

[ibizacupra]

if you have read the forum thoroughly you will also have seen higher boosted IHI VF34's have warped their exhaust housings, DP's and eaten a few bearings along the way.

So long as you know all that you know what you are asking for.

 

[aidy.t]

if you have read the forum thoroughly you will also have seen higher boosted IHI VF34's have warped their exhaust housings, DP's and eaten a few bearings along the way.

So long as you know all that you know what you are asking for.

By the sounds of things iv'e got two options here, scrap the IHI idea and go for a different turbo which will allow me to acheive my goal of 400lbft or keep the boost turned down on the IHI. What turbo would you recomend to give me a good all round package, drivability etc.
At the moment Bill i am only going to uprate my internals, rods valves etc to keep the costs down for now, but certainly later the option is there for the 2.0ltr conversion.