Blow Thru Turbo GTV

[BradGTV]

ok so im going to turbo my 2ltr GTV,
i have a thread on the alfa BB but was wanting to get some other opinons and help,
on the net i have found the original turbodelata specs for the dellortos,

turbodelta carb specs - (standard dellortos in brackets)
Choke - 32mm (32mm)
Main Jet - 140 (150)
Main Air Corrector Jet - 230 (210)
Main Emulsion Tube - 7772-14 (7772-11)
Idle Jet - 62 (58)
Float Setting Height -15.0 mm (same)
Float Needle Valve - 150 (150)
Pump Jet - 35 (40)
Starter Jet - 80 (80)
Starter Emulsion Tube - 7482-3 (7482-3)
Pump Delivery - 5cc / 20 strokes (8cc)

so my plane is to build a set of dellortos, buy a intercooler, make a exhaust maifold and inlet plenum and put a t28 turbo on.

i do have a few concerns -
1. regarding compresion ratio - i have been told i dont really need to lower the CR as im running a intercooler and running around 8-9psi is this true? can i use rods out of another alfa to lower CR or do i need to buy new pistons?

2. ignition timing - i have been put on to this by duk on the bb http://www.jaycar.com.au/productView.asp?ID=KC5442&CATID=25&form=CAT&SUBCATID=347
is this all i need? how is it intalled? is this the right thing for me?
also what did original turbodelata use for ignition?

3. i also need advice on a fuel pump?

if people have made a replica turbodleta engine then could you please shed some light over the issue or what you did?
cheers, brad

[alfagtv152]

Hi Brad,
I ran 10psi on the standard 9/1 compression with a supercharger and EFI no probs.
I then built a low compression motor,7/1,by simply using twinspark pistons(flat top) and liners running 15psi boost for 200rwhp.
Cheers
Andrew

[jimnielsen]

Brad, It may be easier to convert the fuel system to run E85 - then you can run a 9 - 10:1 compression ratio and still make 20 psi. re the Jaycar ignition - I have built several of them, for use of Alfa racecars - and they do work, but the ignition "curve" is very rudimentary compared to a modern ECU. This may prove a problem on a turbo car if you need fine control over the curve to keep detonation at bay.

jim ~

[BradGTV]

cheers, 4 the info guys,
thanks for the offer choderboy but im in SA could you put up a pic of your engine bay? and car?
andrew, was 15psi max boost for ur built motor?
jim sorry for asking a dum question but what is e85? is it a type of fuel?
so do u guys think is hould lower the comp ratio or not?
im gussing i will because as andrew said i can run 15psi as opposed to 10psi on a standerd engine and it a bit safer.

[Brad M]

what is e85? is it a type of fuel?

Google/Wiki says ... http://en.wikipedia.org/wiki/E85

[BradGTV]

thanks brad, e85 five sounds good but my only concern is that if only 1900 outlets are across america there wil 0 in south australia.
cheers, brad

[Storm_X]

u can buy the fuel in 44galon drum. or even elf race fuel.

im planing to use ts rods in the motor. if i add pistons also it will drop to much and im not really planing to run over 20+ psi. and i got told with the pistons i few things has 2 be changed/done to fit them unlike the rods just go st8 in.

brad u after turbo carbies at all?? i have a turbo rebuild kit my self that i was planing to use.

[Brad M]

0 in south australia.

There is at least 1 ... http://www.unitedpetroleum.com.au/distributor-e85-locations.asp

Also, for reference the Aussie Taxi Championship blasting around the Mountain this weekend uses E85.

[BradGTV]

stormx - is it ur dellorto turbo kit for sale?
brad - is the price much more than premium? and also what is involved to convert my car to e85?
also do u guys know were i can get ts rods from? (im guessing out of a twinspark )
cheers, brad

[jimnielsen]

Brad, E85 costs approx 99c a litre in Melbourne, at the one and only place that has it as 'pump fuel'. It costs approx $2.00 per litre to buy it in drums from specialty fuel companies.

To convert to E85 "all" you have to do is provide for a fuel flow capacity of approx 1.6 - 2.0x of what would be required in the same application with normal pump gasoline. In a fuel injected car then, you would need to increase the fuel pump capacity, increase the injector flow capacity, increase the fuel line/rail capacity. You need to have some sort of programmable ECU capability so that you can tell the thing to squirt in more fuel as required etc.. In practice racecars converted to E85 use between 1.3 and 1.6 more actual fuel volume. Most modern fuel hose can cope with E85, old hoses all need to be replaced.

The E85 forum (which is of course USA based) has a mountain of info on the conversion process. Mostly for carby cars actually.

cheers, jim ~

[Storm_X]

ha there u go Tapleys Hill Rd... i heard of some weird fuel at the BP next to adelaide airport not sure of the name tho.
i might be wrong but do ennufe petrol stations sell %85 ??. the one on sailsbury highway (now BP) had this cheap as fuel and u had 2 go in and ask for it as it had a padlock on the pump. we asked if we could put it in my m8s sigma but she said u neede some sort of box/computer.

i might sell my dellerto turbo rebuild seal kit x2. i also i have top hats for the dellerto for sale.

[Storm_X]

hay BRAD that intercooler kit i was talking about on the alfa BB is like this one pretty much exactly the same

http://cgi.ebay.com.au/TURBO-INTERCOOLER-PIPING-KIT-NISSAN-SILVIA-CA18DET-S13_W0QQitemZ370258254169QQcmdZViewItemQQptZAU_Car_Parts_Accessories?hash=item56351c9959&_trksid=p3286.c0.m14

[BradGTV]

not sure if i will go e85. i think i will just lower the CR and run with premium fuel.
hey storm is your turbo kit similar to this - http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=DHLAturbokit&CategoryID=1&PartsectionID=1   if so where did you get it?
also if i bought this kit is that it for the carbies or do i still have to buy all the diffrent sized jets ect..? (list of sizes in my first post)

[Storm_X]

yea thats what i have.
yea u still need to buy all the rest. u can run it off the standard jets etc i got told but yea u can just change the jets only and it should b fine. all goes on how much power.

i was just going to kit my delertos that have bigger jets anyway and replace all the shit that needs to be replaced.

[BradGTV]

how much did that kit cost?
did you by it from dellorto.com or in sa?