Building internals for roughly 8-10 psi

[ej_swag]

Hey guys I got a daily driver jdm d15b swap but im boosting it this summer. In preparation, im building the bottom end so it stays in tact for a (hopefully) hell of a long time.

(not sure what size turbo im going with, but i know im going for about 225+ whp (hopefully)) Just want something i can use as a daily driver but get on it when i want to without blowin it apart.


Most people always say buy this > http://fjdistributors.com/product_info.php?products_id=567

But im very iffy with the custom length rods. And will the vitara pistons hold well with 8-10 psi? It says up to 500 whp but my buddy said not to use anything but forged.

What crank? (forged)

 

[2slo4u]

a vitara build will hold more than 8-10 psi,
gotta find out what turbo/size you are going to use first

 

[Esotericimage]

the stock block can hold close to 200hp..

I would add rod bolts

but the D15 is a great engine for boost!

 

[DarkCreep]

Arp

 

[Kensai]

Arp headstuds at least and rods if you want to be safe.

 

[AE Motoring]

extra insurance is always a plus

 

[ej_EXtasy]

I'm going for Eagle rods, arp headstuds, and vitara pistons for my y8 when the time comes. Then doing some headwork. Crower stage 2 cam, AEM cam gear, Supertech springs and retainers.

 

[ej_swag]

Yeah but how are the FJr custom length I-beam rods? Are those even good? that's part of the package which is pretty good for everything it comes with. I just want to make sure those rods are going to be good or im just going to buy seperately I guess.

(thanks for all the input too!)

 

[95CivyHatch]

the stock block can hold close to 200hp..

I would add rod bolts

but the D15 is a great engine for boost!

A buddy of mine is running the same motor STOCK on 10psi making 235hp with a great tune!! goes to say d15s are a nice motor

 

[Kensai]

What turbo lol? There's a difference between 10 psi on a GT35R and a small dsm turbo.

 

[ej_swag]

Yeah but how are the FJr custom length I-beam rods? Are those even good? that's part of the package which is pretty good for everything it comes with. I just want to make sure those rods are going to be good or im just going to buy seperately I guess.

 

[Esotericimage]

OP: if you build the block then you can go for mad boost. i would recommend a .55 trim like this>
http://www.go-autoworks-store.com/gosptubybupo.html
theres dyno sheet showing what this can do, and with a built block, 650cc, good tune, and you got one helluva pavement pounder.

guy on my other boards has a d16 on boost 18psi, people want to look at the engine and they all say they cant beleive they lost to such a small engine .
edit: .57 trim ^^
upgrade clutch and cooling system also

Also, if your not sure of the rods, look around.. theres deals all over on combos

 

[ej_swag]

OP: if you build the block then you can go for mad boost. i would recommend a .55 trim like this>
http://www.go-autoworks-store.com/gosptubybupo.html
theres dyno sheet showing what this can do, and with a built block, 650cc, good tune, and you got one helluva pavement pounder.

guy on my other boards has a d16 on boost 18psi, people want to look at the engine and they all say they cant beleive they lost to such a small engine .
edit: .57 trim ^^
upgrade clutch and cooling system also

Also, if your not sure of the rods, look around.. theres deals all over on combos

I was thinking of building my own kit by putting stuff together when i find deals. Like i found a 225 lph Walbro fuel pump for like 40 bucks brand new and bought it, and got an ARK Rev limiter for 80.
I also wanted maybe a garrett turbo, but your saying a .57 trim would be good?

And when you say pavement pounder...haha...the reason i said i want only 8-10 psi is because i want it to last for a super long time. Not track racin i just want a fun as f**k dd.

For clutch i was thinking exedy stage 1-2 clutch (cant decide between the two) and a 7-8 lb flywheel.
Cooling system- aluminum radiator and maybe a go autoworks intercooler? (it was like $150 on their site)

 

[Esotericimage]

go stage 2, you will get used to the power after the 2nd week, trust me on this. and it doesnt matter the PSI u push, Its all in the tune. 5 lbs or 15 lbs will be harmful if its not tuned correctly. So pick a HP/TQ goal and tune for that goal, not based on psi.

Anything autoworks is reliable and most likely warrantied. they take care of there customers after the sale.


.57 is a good broad power band for the smaller displacement. even a T3 super 60 is a great garrett for a D15

either super 60 .42/.48
or
garrett 50 trim
or
garrett .57
or bullseye .55

 

[ej_swag]

go stage 2, you will get used to the power after the 2nd week, trust me on this. and it doesnt matter the PSI u push, Its all in the tune. 5 lbs or 15 lbs will be harmful if its not tuned correctly. So pick a HP/TQ goal and tune for that goal, not based on psi.

Anything autoworks is reliable and most likely warrantied. they take care of there customers after the sale.


.57 is a good broad power band for the smaller displacement. even a T3 super 60 is a great garrett for a D15

either super 60 .42/.48
or
garrett 50 trim
or
garrett .57
or bullseye .55

Heres a garrett turbo from go autoworks (t3 super 60) and its .42/.48. What turbine? 4 bolt 5 bolt? http://www.go-autoworks-store.com/gat3su60.html

Yeah hopefully garage 808 can tune my 8-10 psi really good, it would be so nice.

 

[Esotericimage]

4 bolt or 5 doesnt matter. i would get the 4 bolt for easier and more room.

you want to tune for HP/TQ numbers, not on PSI