turbo mpg and throttle body mpg

[tichy]

Just wondering on what difference in mpg with these two compared to standerd vtr/s also what difference in servicing cost and reliablitliy

[blackie_2k5]

well that would depends on which engine you wanted, and the spec

my vtr turbo is no diff to stock unless you boot it, even still its pretty dam economical, REALLY surprised me

[tichy]

Are the servicing cost any extra also what do you think would it b ok as an everyday car any harder to start in cold whether any problems in that sort of area if you get what I mean

[blackie_2k5]

mines a daily car, its fine, they need alot more care and servicing, but if you dont it yourself its pennies really

[Sophia_Bush]

1.1 turbo in the quiky was more economical that my gti both driven hard

[tichy]

Can you give me any info on what extra servicing parts are needed compared to standard I'm just looking into this and never see any threads on this just threads about power and that

[stevo1600]

well clutchs/gearboxs,driveshafts etc. the general drivetrain of the car will have a shortened life over standard obviously.

correct me if im wrong but i believe turbos hurt clutch's more than any other form of induction i.e supercharger/TB as its the general bashing when you hit boost.

as for mpg, i can also vouch my mpg is normal unless i start booting around.

starting in cold is no different from a standard engine, dont be stupid and give it full power from the first turn of the key in the morning you need to let engines warm up to pro-long life.

when giving the engine some, a turbo needs to cool down before you switch the engine off. it uses oil/water to cool it down and relys on the pressure generated by the cars pumps when running. if you turn it off when you have just been blasting around the turbo will be glowing red hot with nothing to cool it etc.

either way turbo/supercharger or n/a power mods = more looking after

it also means more things can break.

[tichy]

Cheers mate that's help me understand more now

[axsaxoman]

to make bhp you must burn fuel .however when cruising at same speed mpg should be very similar -.If how ever you go for a high powered bosted car you will loose some effiency as a function of lowering the comp ratio ,thats why car makers tend to keep comp ratio fairly high and use less boost
better for emisions + mpg+ less lag =better cold start +less fuelling required to get a good idle than with low comp.
i must stress that low /high comp are comparative phrases ,as with 7 psi what would be consdiered low comp could be very high comp for 15+psi.
a smaller engine boosted to give same power as a larger engine will generally ,if done correctly give better fuel economy over normal driving conditions.
mutliple t/bodies verus single std t/body will be the same provided the mapping is done correctly .
If we are talking full out track usage at max power then nothing will give economy.
EG our 1294 ax race car averaged around 5-6 mpg at racing speeds

[AlexB]

On my high comp ph4 itb engine on a motorway cruise i was seeing around 35mpg areound town about 25
flat out on track around 10-12 mpg

As for service costs i do regular oil changes and mine being a pug1off motor does use a little oil so regular level check and a top up occasionaly tbh its not as bad as a lot of people think

Cold starts i tend to let the car warm up stationary anyway as i dont have a long trip to work and its better tbh as your no lifting above idle till the oils warmed up so less wear on internals that way i used to do it with my standard motor too half the time especially in winter

[AndySAXO]

Pug1off engine burning oil? No way? :p lol

To be fair if your going to spend big then mpg shouldn't be the think worrying you!

A low boost setup would be ok as normal driving you will not be on boost so shouldn't be too bad.... But as you get the boost in it will lower your mpg a bit.

Normal driving should be about the same I guess.

[tichy]

Not Realy botherd about mpg when I'm giving it some just don't want stupid mpg when I'm just cruising on long journeys etc and how much roughly is low comp pistons to get done

[martyno]

bout a grand mate!

[hard_corejoeboy]

If you need to ask about the MPG it means you can't afford it!

Buy a 1.4 saxo/106 and get 60mpg like me :D

[blackie_2k5]

bout a grand mate!

buying new about this, but youll then need new crank and main bearings, aswell as bore hone's, that are normally about £20 per pot if not doing it yourslef

and other rebuild parts on top

[stevo1600]

sorry to hijack but when fitting forgies whats needed to be done.

just pistons not rods/bolts etc.

[tichy]

So what does everyone think would be better for a fast road car throttle bodies or turbo I know throttle bodies are a cheaper setup but not Realy botherd about that just wondering what you people think and why

[blackie_2k5]

sorry to hijack but when fitting forgies whats needed to be done.

just pistons not rods/bolts etc.

basically full engine rebuild mate, still need top end off, still need bores honed, still need crank/rods out, so all new crank/rod bearings, your hone, pistons and rods back in, crank back on, top end back together

[blackie_2k5]

So what does everyone think would be better for a fast road car throttle bodies or turbo I know throttle bodies are a cheaper setup but not Realy botherd about that just wondering what you people think and why

turbo is alot more bang got your buck, and alot more fun IMO

[tichy]

sorry to hijack but when fitting forgies whats needed to be done.

just pistons not rods/bolts etc.

Hijack all you want mate lol the more of an insight I get into this sort of thing the better Realy lol I'm a bit of a beginner when it comes to power like this and the sort of things to be considered when uping the power

[stevo1600]

so literally engine strip, crank out pistons etc.

bore honed so thats well say 100 quid.

then standard crank back in with standard rods but new bigend bearings. uprated bearing or standard?

then pistons in head on then done?

[tichy]

So how much do you reckon it will cost say for everything up and running at a reasonable power but still reliable and can you name any places to get the work done in Birmingham area im not realy capable of doing the work myself

[martyno]

So what does everyone think would be better for a fast road car throttle bodies or turbo I know throttle bodies are a cheaper setup but not Realy botherd about that just wondering what you people think and why

For me it has to be turbo. Simply because I know I would get bored of bodies straight away and would be upset that i spent like 3k on making my car not that much faster even though it would sound sexy as!

Turbo will be more fun, better mpg for normal driving and give you more bragging rights if your into that sort of thing, but will be at least twice the cost (for a reasonable conversion) as you say you cant do any of the work yourself.

If you plan on keeping the car for a while I would say save for turbo, if looking to get rid in a year or so, I would say bodies.

Just my 3p :)

[martyno]

so literally engine strip, crank out pistons etc.

bore honed so thats well say 100 quid.

then standard crank back in with standard rods but new bigend bearings. uprated bearing or standard?

then pistons in head on then done?

If fitting the forgies, you'll obviously be upping the boost, so also have to see if your clutch is up to the job, thats another 300 or so (without fitting).

[hard_corejoeboy]

Just buy something like this and save yourself a lot of time, hassle and money.

http://pistonheads.com/sales/2944617.htm

Power is nothing without control btw

[tichy]

I would rather save and know its mine an get to see the work being done and know the works done right and not bodged and hopefully learn abit about what's needed and what goes into building a turbo from scratch

[tichy]

Can anybody give me list on what is exactly needed to get a turbo sax up and running at a reliable power and what sort of Bhp/torque would it be realisticly be running

[martyno]

Can anybody give me list on what is exactly needed to get a turbo sax up and running at a reliable power and what sort of Bhp/torque would it be realisticly be running

Contact luthor1 (Predator ecu guy). Hes doing a 'drive in, drive out' turbo conversion for around 3k. You will prob be looking at around 170-180hp if you want it 'safe'. All his feedback is excellent so I think thats your best bet to get you up and running.

[hard_corejoeboy]

I would rather save and know its mine an get to see the work being done and know the works done right and not bodged and hopefully learn abit about what's needed and what goes into building a turbo from scratch

I know the feeling but that cost me a lot. Besides Toyota did a lot of work trying to not bodge that car lol

[tichy]

Contact luthor1 (Predator ecu guy). Hes doing a 'drive in, drive out' turbo conversion for around 3k. You will prob be looking at around 170-180hp if you want it 'safe'. All his feedback is excellent so I think thats your best bet to get you up and running.

Cheers mate might have a search around and look at some of his feedback

[tichy]

I know the feeling but that cost me a lot. Besides Toyota did a lot of work trying to not bodge that car lol

That the only reason I think about buying one already done but knowing my luck ill end up spending more money that way lol

[tichy]

Well saying I can't do anything myself I don't realy what it involves I could do like just the bolt in bits and that just not the internal stuff I dont Realy know what's involved is it a case of bolting the turbo and intercouler on or is it harder than it sounds