View Full Version : 1.2 carbed turbo...
boyd_1989
26-09-11, 10:58 AM
as above, has anyone on here done it?
ive just done a deal with someone and ended up with a mk1 nova 1.2 carb G REG with half turbo converted, i just got to finnish it. will it be worth it, even just for a laugh? lol
ill start a project thread soon as i get some pictures.
comments please
boyd_1989
26-09-11, 11:24 AM
lose the text typing.
what text typing?
boyd_1989
26-09-11, 11:38 AM
sorry, just edited it, ill try not to do it again
there was a 1.2 turbo on here a while ago
boyd_1989
26-09-11, 11:51 AM
there was a 1.2 turbo on here a while ago
could you link me to the thread? if possible
thanks
cant see the point tbh unless its just for a giggle lol
Imho you could get about 150bhp from a boosted 1.2 IF done properly, rather than the usual route of bodge bits on like an R5 :(
boyd_1989
26-09-11, 11:55 AM
never seen one work yet
what went wrong with ones you have seen?
boyd_1989
26-09-11, 11:57 AM
Imho you could get about 150bhp from a boosted 1.2 IF done properly, rather than the usual route of bodge bits on like an R5 :(
lol i am using the R5 carb
probably never finished or never ran right or melted
boyd_1989
26-09-11, 12:00 PM
probably never finished or never ran right or melted
oh right, well i will give it a go lol the car only owes me £35 and i have a spare engine just incase
what about ignition with vac/boost controlled advance/retard.... Thats the bit most pikey builds forget lol
what about ignition with vac/boost controlled advance/retard.... Thats the bit most pikey builds forget lol
which is why half them never work
oh and £10 says this never works properly lol
boyd_1989
26-09-11, 12:10 PM
I honestly dont know much about turbo's but i am going to try it and see what happens lol if it does not go too well i will just go for different engine upgrade, 16xe again or 1.6 8v with twin 40's or something like that
boyd_1989
26-09-11, 12:11 PM
oh and £10 says this never works properly lol
ok lol it wont be done for a while yet though
oh and £10 says this never works properly lol
id bet you but i know id lose
what went wrong with ones you have seen?thats exactly the problem, they dont work in the first placelol
boyd_1989
26-09-11, 12:20 PM
Just keep an eye on my project thread when it starts, i will do my best to try and make this work :)
http://www.pngclub.com/forum/showthread.php?119791-My-first-ever-nova-1.2-turbo-(standard-engine-with-a-turbo-slapped-on)/page7
TeddyThom
26-09-11, 01:57 PM
Would still love to do this myself just for sh!ts and giggles.
And concerning the why bother question... people turbo 1.3's... They are only a 100CC more than a 1.2... So the question of why bother could be directed at them as well....
http://www.blogcdn.com/uk.autoblog.com/media/2011/03/petrol-can-rex.jpg
would still love to do this myself just for sh!ts and giggles.
And concerning the why bother question... People turbo 1.3's... They are only a 100cc more than a 1.2... So the question of why bother could be directed at them as well....
ok, lets put this into perspective...... A couple of people have turboed a 1.3 properly.... There have also been some pikey half built attempts.
If you turbo a 1.2 for the road on the cheap, it might get 100hp, and might last, but you can get 100hp into a nova for a lot less money & work by simply sticking a 1.6 in.. I think it is mostly attempted for 'lets not tell the insurance' reasons.
I'm building a 1300 turbo for a few reasons, I always wanted to have my SR converted by Courtenay when the first did the 1.3 conversions, Sports should have 1300's, I got the engine with all the conversion bit at a good price :)
IMO its doable cheap, just don't expect it to last lol id tell your insurance first, that way you might realise tgat you don't want to pay the extra just for a laugh
TeddyThom
26-09-11, 04:36 PM
ok, lets put this into perspective...... A couple of people have turboed a 1.3 properly.... There have also been some pikey half built attempts.
If you turbo a 1.2 for the road on the cheap, it might get 100hp, and might last, but you can get 100hp into a nova for a lot less money & work by simply sticking a 1.6 in.. I think it is mostly attempted for 'lets not tell the insurance' reasons.
I quite agree with the "if you gonna do it, then do it properly" philosophy, but people expect a 1.6 nova to be modified. If I had the money to even think about it, I'd turbo my 1.2, it's all about what you can do with what you got. If you run about with a souped up 1.2 that is a damn site quicker than everyone else thinks/expects then surely that's money well spent?? If you can do it and do it properly then why not?? It's not really different to tuning a 1.3... A starlet GT Turbo is a 1.3 (IIRC??) and they seem to work well enough, granted they are jap and quality is better but surely the principle itself is there???
IMO its doable cheap, just don't expect it to last lol id tell your insurance first, that way you might realise tgat you don't want to pay the extra just for a laugh
To be fair, if you do anything to the engine, don't expect it last... be it a 1.2 or a 2.0. If you look after it then it'll last a while but nothing will last forever.... As for insurance... Well that comes under the "do it right" philosophy...
im turbo'in my 1.6 based on the courtenay way, few folk says its a bit pikey but it should last on low'ish boost. dont see what a 1.2 on wont work if done properly imo
The 1200st engine is ancient now, and will need a rebuild before even thinking about doing one... The 1.2spi is just not worth trying imho..
boyd_1989
26-09-11, 05:04 PM
Thanks for all info / advice / oppinions but im going to give it a go anyway. as i said before the car owes me £35 so im not going to lose anything on it, if anything ill make money. im going to try it, if it works then jobs a gooden :) and if it doesnt then it will have to be another C/X16XE or maybe GSi/GTE maybe with twin 40's. project thread should be started by next weekend, just collecting photo's of how it stands now. thanks for all your comments
Pics will be interesting, definitely.
boyd_1989
26-09-11, 05:10 PM
should be alot of pics, i like looking back on progress :)
TeddyThom
26-09-11, 05:46 PM
The 1200st engine is ancient now, and will need a rebuild before even thinking about doing one... The 1.2spi is just not worth trying imho..
If you going to do it then do it properly :thumb:
but this is the problem mr Thom, if you get a 12st, than rebuild the bottom end, and then probably use a gte top end & efi, then fit a decent turbo (as in mikes thread) then get it mapped, you will be about 2 grand down the road with a car that might make a few 15 year old lads get moist at a cruise, but will not be any faster than a c16xe with a powerbox inlet manifold which will cost you 2-300 quid to get.
ok, the technical challenge will be great, but its damned expensive. a 1.3, 1.4 or 1.6 turbo will obviously make a lot more power for the same money.
turbo-boy
26-09-11, 06:21 PM
Go for it mate everyone has to start somewhere, when you understand how a turbo works and what's required of other things like fuel delivery and the feel of the car as in when ur driving it knowing when something isn't right and not knowing is the main reason why they don't last, if u hear the engine detting do you know why and what to do?
I honestly dont know much about turbo's
Stop right there. lol
And concerning the why bother question... people turbo 1.3's... They are only a 100CC more than a 1.2... So the question of why bother could be directed at them as well....
Small engined turbos can work very well - look at Starbos. But we're talking about doing a LOT of work for gains that could be made in easier ways, and probably be more reliable. And lest we forget, the Starbo was designed to be a turbocharged engine, you're not taking one thing and trying to convert it into something else.
I think it is mostly attempted for 'lets not tell the insurance' reasons.
I'd like to say most people should notice a blower hanging off the exhaust manifold. But then my ex-mechanic dad did miss the turbo on the cav til I pointed it out to him lol
I'm not saying don't do it - I'm merely saying its going to be tres difficult, and ultimately a bit of a white elephant in terms of bhp-per-£.
Orrr just get an electric dump valve and tell everyone its a real turbo :cool:
Calamity Josh
26-09-11, 07:22 PM
Give it a go mate, you'll always get 99.9% of people saying get a 1.6 or get a redtop e.t.c... it gets boring (like speedlines) just do it! p.s i got offered a full turbo conversion for a 8v nova engine the other day, was propper tempted to turbo a 1.2 like you are but after boring out to fit the 1.4i pistons, 1300 head, cam, 1600 exhaust e.t.c, who says it'll cost a fortune?
so a rebore, £150-200, new pistons about the same, then a crank grind, oil pump, head recon, then as decent turbo that will actually work £4-500, then there is the oil feed & return, oil cooler & i/c. then there is the small matter of controlling the ignition & fuelling.. which is best done with an aftermarket ecu, so put at least a grand for purchase & mapping. then there is the exhaust too, and some sort of heat shielding, pipework etc. i'm not saying its impossible, but you can get a complete LET in for less, as the stuff is available off the shelf.
i bet colin smith would cry if he totted up the cost of the engine in his hill climber from when the original owner fitted it
TeddyThom
26-09-11, 08:29 PM
i bet colin smith would cry if he totted up the cost of the engine in his hill climber from when the original owner fitted it
Yeah but he has probably inspired a lot of people. Granted you can get a LET for that sort of money, but ask yourself this: How many people have a LET? Quite a few. LET novas are something of a common conversion, hence why everyone sees a nova and says is it a redtop y0? You get yourself a 1.2 turbo then you are goin to be in a whole different world, sure you can get bigger gains for less money but that's half the challenge, it would be nice to see someone actually make something of 1.2 turbo project, you know do it properly etc. Would be different from the usual conversions. LET nova's, although fun to drive no doubt, are pretty boring as it has been done before etc.
Get a 1.2 and turbo it, do it properly. I, for one would be a lot happier to see someone complete that and have fun with it, than build a LET.
For the couple of grand that a good LET conversion will cost you could build a very good N/A smallblock properly, without being limited by the crap potential of a 1.2.
its different...isnt that the whole point of a project. to do something that hasnt been done to death
tbh the state of most LET's thesedays they need a rebuild and you wont be happy with the std 200bhp so will be upgrading that anyway so consider £5K for a LET engine alone...... kinda makes stupiding up a 1.2 appealing lol
Nova_Tek
26-09-11, 08:42 PM
It would be quite an achievement to build a 1.2/1.3 turbo Nova that worls well and won't melt. I'd give much respect to someone who does it. we can argue that there are cheaper options of getting the same power for less but doing something different is commendable.
I was once upon a time looking to do the same but decided to go for a bigger engine.
One huge advantage is weight and how it'll affect handling.
I'd give more respect to someone that didn't sod about with a 1.2 and used a 1.6 16v at least lol
My 1300 turbo set will be ready for the Sport in the spring
I'm hoping for 120bhp, will be done proprerly as well, I've done it because it something different
My 1300 turbo set will be ready for the Sport in the spring
I'm hoping for 120bhp, will be done proprerly as well, I've done it because it something different
is that all?...... FAIL
ryansnova
26-09-11, 08:55 PM
its still alot of power for a 1.3 though lol
Better to aim low then your more impressed with it lol
I do think its possible for 150 with the bits ill use
its still alot of power for a 1.3 though lol
And still very very easy to get that from a 1.3 in N/A form lol
Better to aim low then your more impressed with it lol
I do think its possible for 150 with the bits ill use
100-110bhp/L isn't a bad aim for NA to a decent spec on an 8v, that puts you at 143 before you start compressing anything in the inlet :)
Spec of the engine will (roughly) be
GM low comp pistons
Rebuilt bottom end
Courtenay cast manifold
T2 turbo (its the one I have may need something else, bigger?)
1mm oversized valved head (currently fitted in the Sport)
C16se cam
AFPR (yet to get so unsure of make)
Megasquirt V3
Irmscher inlet manifold ( also currently fitted to the Sport)
Scorpion full system with centre and front box removed
I'm hoping the will give 120-150bhp
boyd_1989
26-09-11, 11:13 PM
some interesting opinions here... thanks to all who want me to give it a go :) the reason im giving it a go is because i got the whole car cheap ( owing me £35 so far ) and i already have the turbo/manifold R5 carb oil lines intercooler there are just a couple bits i still need to get like exhaust and intercooler piping but i have that sorted.
im not doing this for power more for a little project / a laugh really. i already have a daily / on going project Nova C16XE with powerbox, 4 branch, decat stripped interior etc... i have a pretty quick car as it is. if i succeed in my little project then its a bonus, if not then oh well it will not bother me at all, ill just change plans.
thanks again for all your views very much appreciated :)
Spec of the engine will (roughly) be
GM low comp pistons
Rebuilt bottom end
Courtenay cast manifold
T2 turbo (its the one I have may need something else, bigger?)
1mm oversized valved head (currently fitted in the Sport)
C16se cam
AFPR (yet to get so unsure of make)
Megasquirt V3
Irmscher inlet manifold ( also currently fitted to the Sport)
Scorpion full system with centre and front box removed
I'm hoping the will give 120-150bhp
Depends how the head is done tbh, that makes a huge difference. Also how confident you are winding the boost up, I wouldn't be surprised if you could squeeze over 200 out of that though, colins is 180 on a 1l and is a standard bottom end and metro van pistons.
Forgots to say. IIRC it was TechnicalSteve who did the old 1.2T build...
TeddyThom
27-09-11, 01:13 PM
Yeah it was, the thread is mentioned a couple of pages back, he had the IC sitting on top of the front crossmember and was gonna modify the bonnet for it
Depends how the head is done tbh, that makes a huge difference. Also how confident you are winding the boost up, I wouldn't be surprised if you could squeeze over 200 out of that though, colins is 180 on a 1l and is a standard bottom end and metro van pistons.
i think 200 is a bit to high to aim for tbh
what do you mean about how the head is done ?
i was thinking of using a e16 head
i think 200 is a bit to high to aim for tbh
what do you mean about how the head is done ?
i was thinking of using a e16 head
Ported, valve sizes, seats, whether or not the seats are bored.
isnt colins a de-stroked 1.2 or something?
no, it is a sleeved 1.2 with a 1.6 mpi top end.... with a lot of money spent on interesting bits to get about 180hp
Southie
27-09-11, 08:16 PM
Here you go from a familiar guy on migcoughweb lol
1.2 8v bottom end, 1.6 8v head from the nova GTE/GSI/corsa 1.6 8v's. to drop the CR. The 1.6 inlet + injectors etc, a 1.6 8v exhaust + adaptor for a T2.
add in some sort of mappable ECU, keep the std cam for now.
oh an FMIC and some mapping time. Should see 150bhp to start with (for how long ive no idea)
That Cambridge bloke is a tosser
Spec of the engine will (roughly) be
GM low comp pistons
Rebuilt bottom end
Courtenay cast manifold
T2 turbo (its the one I have may need something else, bigger?)
1mm oversized valved head (currently fitted in the Sport)
C16se cam
AFPR (yet to get so unsure of make)
Megasquirt V3
Irmscher inlet manifold ( also currently fitted to the Sport)
Scorpion full system with centre and front box removed
I'm hoping the will give 120-150bhp
whats a 1.3bhp standard? 150bhp out a 1.3 is pretty good like. the low comp pistons and aftermarket managent though will help that
spec of my 1.6 roughly
Rebuilt engine,
Spacer plate
Spi manifold
T2 turbo
AFPR
Boost trick switch
Vernier pulley
Standard ECU
Custom downpipe and exhaust system
FMIC
and im only hoping for 150-170bhp also been thinking about headwork but will that make any difference?
Nova_Tek
28-09-11, 07:31 PM
standard 1.3 (like an SR) is like 70 odd bhp.
That Cambridge bloke is a tosser
Agreed!!
That Cambridge bloke is a tosser
Guess he's into the boat race?
letvalva
28-09-11, 08:09 PM
mate had a 1.4 turbo loon many moons ago and it went like fook, basic spec that was the 1.6 head to lower the comp, a t25 turbo frontera intercooler and a 1.6 lancia delta turbo twin webber. it lasted longer than the car its self did ran 20psi no problem too
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