Urs4 Build plans

[Speedyurs4]

Hello all As stated in my intro post Im Planning on doing a build in the near future with my Urs4.
Im aiming for around 400~450whp on $4500-$5000 budget.
Heres My list of parts so far i Plan on using:

Scat H-beam rods
Arp Head studs
Gt3076r a/r 63
630cc injector
FMIC 30inx9.25in
V.E.M.S
044 fuel pump
Arp main studs
034 aluminium flywheel
stage 3 southbend clutch

Any input and ideas are welcomed and appreciated Thanks

[PRY4SNO]

Welcome!

That's a pretty tight budget, as it doesn't allow for unforeseen circumstances. It's doable, but just hope you don't run into anything unexpected while you're in there...

0.63 a/r is pretty small and you'll run into detonation in the upper rev band. Come to think of it, I believe a cast 3076 is gonna be maxed out around 400whp.

What kind of fuel? 91? 93? e85? w/m? What FPR?

Are you installing fresh main/crank bearings?

Have you considered suspension and braking upgrades?

[Speedyurs4]

W/M? and

so far ive been able to get
680cc injectors -$270
FMic-$220
044-$180
and head studs for $140
all under what i intended on spending
and yes i plan on replacing rod bearings
crank bearings head gasket
piston rings and some other parts too
all are in the $4-5k plan
as for brakes either hp2 calipers or 944 4 pots performance rotors and performance pads
for the suspension i plan on h&r springs since i already have bilstiens in.
fuel goin to be used is 93 octane fpr @ 3 or 3.5 bar
and if the gt3076 max at 400whp that's a number id be happy with
Thanks for your input!

[Speedyurs4]

heres some pics

[quattro-nick]

nice project
i also use vems and a gt3076r on a AAN engine with 0.82 A/R (full boost on 4000 rpm)
0.63 gives you a faster spool(about 200 rpm) but less power on top
i have a brand new garret housing 0.63 for sale if you need one

[rxl]

nice project your having..
i hope when you open up your engine your not going to be suprised as i was...
my block needed new pistons with a rebore, crank resurface... oh well after that full balancing...
god these cars are black holes for money...

keep up the good work!

[zafra]

550 on the clutch? not consider in piston also?

[Speedyurs4]

nice project your having..
i hope when you open up your engine your not going to be suprised as i was...
my block needed new pistons with a rebore, crank resurface... oh well after that full balancing...
god these cars are black holes for money...

keep up the good work!

Lol yea ive herd but hopefully nothing major motor has 177k on her

[Speedyurs4]

550 on the clutch? not consider in piston also?

450 was just being generously a solid number im hoping for is 400(around490-500 crank ) and correct me if im wrong arent some guys running 700 crank with stock pistons??

[rxl]

Open up the block and get it measured and you will see if you need new pistons or not.. My engine had 153k on the clocks..

[Speedyurs4]

Open up the block and get it measured and you will see if you need new pistons or not.. My engine had 153k on the clocks..

K is measuring the block something i can do at home or is better of goin to a pro

[rxl]

It does not cost a fortune and I doubt that you have the right tools to measure it. Get it to the mashineshop as you will be needing a chemical wash measurements taken of the crank and of the cylinder bores. If the cylinders turn oval you will need to rebore it. If your lucky only new rings and a honing.

[Speedyurs4]

Good point and ill have to look up local machine shops. For the head did you run into any issues there ? any recommended upgrades?

[rxl]

Well most of the heads have cracks so you will be lucky to find that you don't need another head. My engine needs some love but the head was OK.

[Speedyurs4]

Ive read about these heads cracking around the plug holes and some re-use the heads if the cracks are not big ill have to see what im dealing with when open it up