Technical help needed with a 1.1 race engine

[sunbeam400]

hi there guys can any 1 help me with tuning my 1.1 race engine for my fiat 1.1 class 4 autograss car .the engine is in standard form at mo so need to make it really go

 

[arc]

hi. what are you allowed to do with it?

have a look at Nitranes car; http://www.nitrane.co.uk/cinquecento/index

 

[rallycinq]

Give us a link to the regs, so we know what you are allowed to do.

Cheers

SPD

 

[randomizered]

Class 4 is a modified class, with engine capacities allowed up to 1130cc. Any engine modification is allowed, except turbo and super charging. This is a class not for the shallow of pocket; engines are extensively modified to bring them to a competitive level, as a specific of the rules is that the original engine and position are retained. Examples of cars in this class are Minis, Hillman Imps, Citroen Saxos and Peugoet 106s.

 

[randomizered]

REbore, high compression, fully lighteneded and balanced everything, cams, valve train, crank, flywheel, valves, buckets., and on and on and on.

Race cams, port, polish.

Throttle bodoies (high revving)

Custom engine managment.

Nitrosoxide injection

Av Gas if allowed.

etc.

SO much you could do, but what is your budget?

A class 4

 

[allanhelen]

Stick a K&N induction kit on, it it will sound like you are beating everthing

I was actualy giving a similar answer to Kris but budget is the main factor, if it isn't give an engine to Guy Croft or GSR along with a few grand

What about transmissions what are the limitations? LSD's for example?

 

[sunbeam400]

a up we are allowed to do anything to the engine as long as it is 1130 cc or below. i build my lads class 1 mini 998 engines and now i got this class 4 with its standard engine so now it is its turn to get the treatment.i do have bike carbs for it and the head will get ported and so on but what cam or should i say is there a cam for the 1.1 ,what manifold can you use for the bike carbs also what exhaust system is there to use.loads of questions for you all.what gear box,diffs ,we are allowed lsds and welded diffs . thanks again to all

 

[allanhelen]

OK to start with there is stacks of info that you can get by searching

The FIAT fire engine has lots of derivatives and most parts are interchangable so if you stay with 8V then cam wise anything 1108 or 1242 will fit and there are lots of uprated or custom alternatives out there but a hibryd 16v is possible. also fuelling there are MPI options that use std inlet manifolds if you want ITB then it will have to be custom

exhaust there are janspeed 4-1, or CSC, Superspint 4-2-1 out there off the shelf but lots of stuff is or has been discontinued so custom would be best bet if you are doing a screamer

Transmissions basically anything Punto FIRE will fit, Quaife are doing a custom LSD for a few of us at the min and there are one or two people that have bought a spare that might part with one, if not Bacci are about the only other option but mega bucks as are there custom gearbag internal

 

[Brooky]

How much money do you have??

Im building a engine up as we speak.
You could easily spend over a grand on the head alone

 

[sunbeam400]

How much money do you have??

Im building a engine up as we speak.
You could easily spend over a grand on the head alone

yeh funds are a bit limited but would hope to be able to cut costs by doing most of the work myself

 

[rallycinq]

First and foremost make sure the bottom end is square and that the pistons fit well.

No point in spending hours on the head, if the bottom end is toast.

Balanced, obviously, to get big power from these engines needs lots of revs. I guess you spend a lot of time turning left, so some sump baffle work would be sensible, seeing as the well is on the 'wrong' side.

The head will respond well to treatment and the Cr can be raised to suit whatever fuel you can use.

Cam is either expensive import or regrind, your call depending on budget. Accurate setting up will help. I think that a race cam is going to be the import variety, I don't think they can get enough extra lift from a regrind.

Cheers

SPD

 

[craigb244]

dont forget EFI. a decent engine management is a must... even for a mildly tuned engine.

 

[Brooky]

yeh funds are a bit limited but would hope to be able to cut costs by doing most of the work myself

You have access to machines?? a lathe and a milling machine?? if so then you can lighten the flywheel, skim the head and make some ITB's, maybe make a vernier pulley aswell.

You dont see many veniers second hand, new there £100
Decent cam is £300+, ive yet to order mine so dont know the exact cost

 

[craigb244]

You have access to machines?? a lathe and a milling machine?? if so then you can lighten the flywheel, skim the head and make some ITB's, maybe make a vernier pulley aswell.

:yeahthat: Always better to make/change your own stuff in my opinion.
your bound to know someone who works in an matchin shop... or know someone who knows someone

 

[cinq for the win]

You have access to machines?? a lathe and a milling machine?? if so then you can lighten the flywheel, skim the head and make some ITB's, maybe make a vernier pulley aswell.

You dont see many veniers second hand, new there £100
Decent cam is £300+, ive yet to order mine so dont know the exact cost

it depends what sort of cam you want to put ion, a fast road cam will set you bacxk about £270 and a fast track will probs set you back about £370.
these prices are for new, which i'm guessing is what you would buy.

 

[Brooky]

Well hes building a race engine, so he'd be wanting a race cam.

€374 from C&B, then theres the exchange rate and delivery from italy.

Dont know anybody else that has off the shelf cams,so its either C&B or a custom jobby machined from a blank

 

[rallycinq]

I got my CandB cam from a place in Dorset or somewhere like that, think they were called Avanti Motorsport.

Walkers might be a source too.

Cheers

SPD

 

[ycming]

I got my CandB cam from a place in Dorset or somewhere like that, think they were called Avanti Motorsport.

Walkers might be a source too.

Cheers

SPD

What one do you have ??

ming

 

[randomizered]

or gazella.cc or however you spell it

 

[rallycinq]

What one do you have ??

ming

Its a lumpy one, why do you ask?

Cos, I don't remember

Cheers

SPD