Internals for Big turbo

[HTC]

Have to agree with bill in this one. The last thing I want on the street is a huge laggy turbo. Indeed great for the strip, but I don't go that often. I don't really want to be doing high rev racing style starts each time I need to pull out of a roundabout to stay in the boost.

 

[ibizacupra]

Meh...my Golf handles just fine I reckon

kinda subjective tho eh

 

[INA]

Have to agree with bill in this one. The last thing I want on the street is a huge laggy turbo. Indeed great for the strip, but I don't go that often. I don't really want to be doing high rev racing style starts each time I need to pull out of a roundabout to stay in the boost.

A 3071R on a 1.9 20V is far from laggy.Try it

 

[h17och]

i have

 

[HTC]

Kinda wishing I did too..........ah well.

 

[ibizacupra]

A 3071R on a 1.9 20V is far from laggy.Try it

depends on its spec. I can think of one which is utter shite... GT3071R laggy as fcuk. Horrible.
even my larger FP's kick its arse in every respect.

Wrong spec I know on that example, but the key thing is its spec of build

whats yours?

 

[ryan_s3]

GT3071 on a 2l evo engine is very responsive similar spool to a FP Green and certainly as quick at spoling as my ihi on 1.8t but obviously in a different league.In my opinion the best road car i've been in is a gt3076r equipped evo with 500bhp.
Here is a video,
http://www.youtube.com/watch?v=vHUQ8RbAgAI

 

[The MoffMeister]

sorry to hijack going to order some pistons whats best for compression rate?
russ told me its 9.25:1 which is standard i belive so what would be best that or chaning in bearing in mind im keeping standard bore?

 

[Cupra20]

so it should be ok with the gt2860rs on a 1.9?

 

[The MoffMeister]

dont see why not

 

[Cupra20]

Good Good, i don't want to buy a turbo thats not going to work very well inconjuction with the new displacement!!

 

[ryan_s3]

that will be fine it's not that big a turbo.

 

[HTC]

I'm going for the stock compression ratio. I woun't be running silly 30+ psi boost, and want the better lower rev range torque.

 

[ibizacupra]

Years back when I has N75 failure on my VF34 I saw 30psi moments from its on stock motor.. and it survived.. went like fook, BUT.................. very much in the lack of the gods me thinks

 

[The MoffMeister]

ok changed my mind now anyway going to get bored out to a bigger cc not sure 1900 or slightly bigger so will do some reasearch first lol

 

[HTC]

I've sent my parts list request off to Bob at qedpower. Just finalising which bore to go for really. Also waiting for replies to machining cost requests from engineering shops.

82mm bore= 1825cc, 83mm bore = 1870cc by my calcs with stock compression.

Any bigger will involve a larger crank etc, which is all possible. The kits are out there.

 

[The MoffMeister]

cheers for that htc looking i may go for 83mm then as long as that isnt to thin for the walls

 

[ibizacupra]

83mm on badger wagen, has run 2.7bar boost.
runs Raceware head studs however, but stock headgasket

 

[The MoffMeister]

so 83mm on leons ok then bill not to thin on the walls or anything?

just wondering so i know for you to price me on them pistons are racewear head studs expspensive?

edit 200 dollars not to bad

 

[HTC]

Raceware studs are reuseable if you plan to be taking things apart often then they pay for themselves. I'll be running OEM stretch bolts. I've not heard of heads lifting with them even on high power. Always ready to be prooved wrong though if anyone else has btter info.