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EFI 351W Twin Turbo Build 

 

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 Post subject: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 11:44 am 
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Location: albany
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Alright guy's,

The plan is to build a boosted 351W. This will be a budget build as i want to this finished and not merely sitting around and turning into a bottomless pit.

The bottom-end is close to being sorted, with Probe Forged dish tops, stock rods with ARP bolts and stock crank.

The boost will be coming from 2 x Precision turbo's sourced from the states..

I am still really confused as to what a good combo will be..

Here are some pics...

http://i304.photobucket.com/albums/nn17 ... o12345.jpg

http://i304.photobucket.com/albums/nn17 ... rbman2.jpg

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 11:47 am 
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Ride: Black EB 5 Speed EL Front End

Location: Bundaberg
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nice turbos, look small so they should spool up real quick

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 11:50 am 
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Two of the pistons are in terrible condition, seems as though some horrific detonation was occurring on cylinder #8 and some excess wear on #6.
Bores have no excessive wear and are still smooth, but this isn't really problem as they will be over bored to 0.030".

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 11:56 am 
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So u already have the turbo's and manifolds???

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 12:49 pm 
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i does.. from a previous scratched twin turbo 302 build...that i never finished.

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Mon Feb 08, 2010 12:50 pm 
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and don't let the pics deceive you, they are monsters.

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 12:33 am 
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Are they Precision T3/4 hybrids ?? If they are they are capable of of over 600 h.p each..
Mine have .63 turbine housing, internal gated .. To keep it compact.. Internal gates work well with twins..

 

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331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 9:12 am 
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I agree with keeping in compact and internal gate as theres not much room for a twin turbo setup in a EF/EL engine bay hence why i think single is the best go and abit cheaper as well.

I can sell u my manifolds which are mild steal and not crappy 304 stainless which WILL crack and u can use them in ur twin setup or ditch the twin and go single and get urself a S400 for about $1000.00 landed put i prefer S400sx.

http://www.turbodaves.com/Products.html

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 9:32 am 
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blacksabbath189 wrote:
and don't let the pics deceive you, they are monsters.

okay that picture makes them look alot bigger than the first picture of them

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 10:19 am 
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they are t3/t4 hybrids, external gate and can support 680hp a piece.

I'm going to stay with the twin set up, i've debated single over twin, and i'm going to stick with twin as i've come this far.

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 10:25 am 
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this is going to be a great read!!!!! whats your budget on this build????

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 1:34 pm 
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Location: albany
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budget on the engine itself is $5k running + $ engine builder cost.

spent so far:

- EFI 351w short motor - $795
- Probe forged pistons - $706
- ARP head stud kit - $180
- Edelbrock 351w lower intake - $300
- Edelbrock elite rocker covers - $110
- Cometic MLS head gaskets - $58

Budget for turbo set-up is 6k:

- 2 x Precision t3/t4 680hp turbo's - $2770 ( including flanges etc ) from US
- Turbo manifolds - $220

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 3:51 pm 
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Hi Tom,

Ive noticed the prices u put in ur post and u got everything at an alright price but can do better and sometimes its best to buy everything at once and get a really good deal especially if u buy from the US. VPW & highperformance world are great to deal with and good prices and can haggle now as no 1 is buying anything.

Save urself money and sell off the turbo's u have and advertise them on www.caliasturbo.com.au as the VL boys would buy this sort of turbo.

Buy a turbo off turbodave where i posted the link and buy a wastegate from here or him and get mine or similar manifolds to mine and do the single setup as its cheaper and way more simple in the engine bay and easier to setup.

Then use the money saved from going single and put it towards ur engine as 5k for an engine aint much at all.

Just my advise to save u money and headaches as ur budget for turbo setup will go over due to stainless manifold which will crack, also paying for 2 dumb pipes, 2 wastegates, 2 sets of oil & water lines for turbo & fittings plsu extra engine bay pluming.

Just a different point of view so dont take it the wrong way dude

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Tue Feb 09, 2010 4:51 pm 
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Location: albany
WA, Australia

No worries mate, i appreciate the advice, and will look into it closely.

On the " to Buy list":

Bottom - end:

- 351w sump and pick up
- high volume oil pump
- bottom-end bearings and gaskets
- EF/EL timing cover and water pump
- Crane 2031 cam
- Rollmaster timing chain set
- ARP con rod bolts
- Piston rings.

Top end:

- GT40P heads ( for now )
- Roller rockers
- pushrods
- Lifters
- Upper intake - Edelbrock RPM or performer

That's about all i can remember for now.

I was rummaging through the shed this afternoon and found a Powerbond race series engine damper ( part no. PB1060-SS Ford 302, 351 windsor 4 bolt ( raised pulley location ) 28 OZ imbalance )

Will this work with my 351w?

I'm going to give Leon a call at A1 Hi-performance this afternoon to talk about machining the block, see what he has to say.

 

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 Post subject: Re: EFI 351W Twin Turbo Build
Posted: Wed Feb 10, 2010 12:15 am 
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NSW, Australia

Good combo.. Similar to mine..
Head studs is good idea..
Aim for 8.5 or higher compression and you'll be fine with good tune, with bigger ring end gap..
Depending on rear housing a wastegate can be fitted by drilling the turbine housing...
Twins V single as far as fab work ?? There isn't much in it as you still have to run crossover exhaust pipe etc... I highly doubt a Borgy will fit as one big lump ???

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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