St205 Performance After Spending £4,000....

February 21, 2006

Hi everyone

I have put aside £4,000 for performance parts on my ST205. What kind of perfomance gains am i looking at for this?

Ive not really looked into it much but i have a rough list

-Forged pistons and rods £600-£1000+

-Water injection kit £200-£300

-fuel pressure regulator and uprated fuel pump £200-£300

-Big Injectors £no idea

-New turbo £1000 (not sure if thats right)

-Apexi ecu + mapping £1000 (weston performance opened a big place next to my house an offered me low price)

(i already have ind kit, exhaust + downpipe)

Anyone got any recommendations on what turbo to buy?

I just need some advice to point me in the right direction

February 21, 2006

I know fensport do loads of turbos for the 3S-GTE, but there all over £1k :unsure:

February 21, 2006

Whats the standard turbo good for, power wise?

CB :thumbsup:

February 21, 2006

I suggest that the man to speak to is Dawsey. After all the cash he's laid out on the 3S-GTE in his Corolla he'll have a good idea of what's worth having and what isn't.

February 21, 2006

Firstly it all depends what you aiming for, secondly if your looking to get an engine rebuild done properly you need to think about more than just piston and rod prices. Ian Smith from ToyautoCentre can do a full strip down rebuild for around 2-3k including custom JE forged pistons, price will vary depending on other parts eg rods, crank etc. So that's at least half you budget already

Secondly the fuel system in the 205 although good for mild tunning does have it's limits, by increasing the rail pressure you can run up to around the 360 mark but it pretty much maxing things out. You'll need an uprated turbo to get up to this sort of point anyway. Most i've seen so far from the stock turbo is about 330ish. Need a new uprated fuel pump, uprated injectors, uprated FPR, and fuel rail. You also need a aftermarket ECU to run the new injectors, so another 1.5-2K for that and you budget is spent.

At this point I'd be looking at uprated clutch, breaking compents, and suspension to safely hand the power upgrades and make best use of it. It's all very well getting a nice high power figure but if you can't stop or get your car round the corners at the increase speed or even get the power to the wheels in the first place then it's not much good.

As for uprated turbos you need to have addressed the above first, you can't run an uprated turbo on the stock ecu as the fueling will be all wrong, secondly you'll need an uprated fuel system to take full advantage of the new turbo, and thirdly you need to have had the engine rebuilt to withstand the increased stress.

You can get hybrid CT turbos which are direct swaps for you exsisting turbo, however they are limited and tend to be expensive. Best i've seen from the fensport CT hybrids is around the 350-360 mark, However I understand that turbotechnics are now making a CT hybrid which they claims is good to 400hp.

There are a large number of other makes of turbo avaliable HKS, KKK, Garret etc all with a large range of turbos depending on your aims, but you need to remember that you have to think about manifold adapters, new generally custom made downpipes, oil lines etc. All of which can get expensive.

If you not thinking of going above 400hp then I'd say stick with a CT hybrid it's a lot simpilar to install and athough costing more than say a garrett they save a lot of hassel.

Above 350-360 mark and things start getting really expensive. You'll need to get the block ultrasounded. Due to the casting tolerances there are a large number of blocks out there which have been labeled "Thinwall Blocks". Basically in the cylinder 2-3 wall the amount of metal between the cylinder chambers and the cooling waterways in the block are too thin to sustain high power and they end up cracking sooner or later. Most people get this done when they have an engine rebuilt. A "Thickwall Block" is generally deemed as one which has around 4mm of wall thickness at the thinest point, a "Thinwall" is generally around 2mm

There are a few ways round the above if you have a thinwall block. Buy a new block or and this is only experimental with the 3s-gte in the uk at the moment, re-sleve the block with steel liners, again this tends to get expensive.

If you thinking of aiming above 400hp then start saving, cos in this teritory things really get expensive, on your current budget I'd go for the following. Might not sound much but it's good building blocks for future modification and it's always better than doing a half ubikd job then having you engine blow up and cost you twice as much fixing it. Prices are a rough guess if you intend to get the work done you need to research it properly youself.

Full Forged Rebuild 2.5K (Assuming you have a thickwall block)

uprated fuel system and aftermarket ECU + mapping eg Apexi Power FC 1.5K

If you got enough money left a Hybrid CT turbo roughly £700.

This should see you around the 360 mark and set things up nicely for future tunning eg bigger turbo, when you have the money to get it done properly and make other modification to keep the power under control.

Right after that little esay I need a cuppa, got any questions let me know :D :thumbsup:

February 21, 2006

Firstly it all depends what you aiming for, secondly if your looking to get an engine rebuild done properly you need to think about more than just piston and rod prices. Ian Smith from ToyautoCentre can do a full strip down rebuild for around 2-3k including custom JE forged pistons, price will vary depending on other parts eg rods, crank etc. So that's at least half you budget already
Secondly the fuel system in the 205 although good for mild tunning does have it's limits, by increasing the rail pressure you can run up to around the 360 mark but it pretty much maxing things out. You'll need an uprated turbo to get up to this sort of point anyway. Most i've seen so far from the stock turbo is about 330ish. Need a new uprated fuel pump, uprated injectors, uprated FPR, and fuel rail. You also need a aftermarket ECU to run the new injectors, so another 1.5-2K for that and you budget is spent.
At this point I'd be looking at uprated clutch, breaking compents, and suspension to safely hand the power upgrades and make best use of it. It's all very well getting a nice high power figure but if you can't stop or get your car round the corners at the increase speed or even get the power to the wheels in the first place then it's not much good.
As for uprated turbos you need to have addressed the above first, you can't run an uprated turbo on the stock ecu as the fueling will be all wrong, secondly you'll need an uprated fuel system to take full advantage of the new turbo, and thirdly you need to have had the engine rebuilt to withstand the increased stress.
You can get hybrid CT turbos which are direct swaps for you exsisting turbo, however they are limited and tend to be expensive. Best i've seen from the fensport CT hybrids is around the 350-360 mark, However I understand that turbotechnics are now making a CT hybrid which they claims is good to 400hp.
There are a large number of other makes of turbo avaliable HKS, KKK, Garret etc all with a large range of turbos depending on your aims, but you need to remember that you have to think about manifold adapters, new generally custom made downpipes, oil lines etc. All of which can get expensive.
If you not thinking of going above 400hp then I'd say stick with a CT hybrid it's a lot simpilar to install and athough costing more than say a garrett they save a lot of hassel.
Above 350-360 mark and things start getting really expensive. You'll need to get the block ultrasounded. Due to the casting tolerances there are a large number of blocks out there which have been labeled "Thinwall Blocks". Basically in the cylinder 2-3 wall the amount of metal between the cylinder chambers and the cooling waterways in the block are too thin to sustain high power and they end up cracking sooner or later. Most people get this done when they have an engine rebuilt. A "Thickwall Block" is generally deemed as one which has around 4mm of wall thickness at the thinest point, a "Thinwall" is generally around 2mm
There are a few ways round the above if you have a thinwall block. Buy a new block or and this is only experimental with the 3s-gte in the uk at the moment, re-sleve the block with steel liners, again this tends to get expensive.
If you thinking of aiming above 400hp then start saving, cos in this teritory things really get expensive, on your current budget I'd go for the following. Might not sound much but it's good building blocks for future modification and it's always better than doing a half ubikd job then having you engine blow up and cost you twice as much fixing it. Prices are a rough guess if you intend to get the work done you need to research it properly youself.
Full Forged Rebuild 2.5K (Assuming you have a thickwall block)
uprated fuel system and aftermarket ECU + mapping eg Apexi Power FC 1.5K
If you got enough money left a Hybrid CT turbo roughly £700.
This should see you around the 360 mark and set things up nicely for future tunning eg bigger turbo, when you have the money to get it done properly and make other modification to keep the power under control.
Right after that little esay I need a cuppa, got any questions let me know :D

pppffttt....that it ?............. :lol:

:blink:

February 21, 2006

Well thanks for all that sketchy :wacko:

I have the money to do it all now... BUT... the question is... do i want to go spending that much on my car :unsure:

I was planning on getting apexi power fc. Place just round the corner called Weston Performance is just about to open and me and my mate been down there to check em out, They said they will do this ECU and map it for £1000. (they have an 800bhp supra in their reception area :drool: )