Worth stroker kitting a LCR going GT2871R??

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
I have a GT2871R turbo kit waiting to go on but have no forged internals yet bar the stock mahle pistons
Have just been looking into stroker kits for the 1.8t to take it out to 2008cc.
Being as i will need to pull the engine apart to fit new rods and will be doing valves too for the turbo would i be better buying a stroker kit??
I know the cost would be more but see varying prices on the kits
Or would i be better just uprating rods and valves??
Would results for increased torque and less lag be more noticeable on a bigger turbo and would the 2871 be too small to really make use of it??
What kind of cost difference between stroker and uprated internals all fitted would i be looking at?
Do people think they are really worth it?
 

AwesomeMike

Forum Sponsor
Jun 30, 2010
99
0
I agree with Bill - if you have the money go for it!

At the end of the day the bigger CC you can get pushing any turbo will make a difference in lag and how the car feels, you tend to find that the bigger the CC the more lower torque it will make too so the more 'driveable' it will be :)

Mike
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
I shall have to go away and do some sums as i can see this engine rebuild costing lots
But good to know, like the idea of earlier boost
 

INA

Garrett Super STAR!
Dec 8, 2007
0
0
www.inaengineering.com
I have a GT2871R turbo kit waiting to go on but have no forged internals yet bar the stock mahle pistons
Have just been looking into stroker kits for the 1.8t to take it out to 2008cc.
Being as i will need to pull the engine apart to fit new rods and will be doing valves too for the turbo would i be better buying a stroker kit??
I know the cost would be more but see varying prices on the kits
Or would i be better just uprating rods and valves??
Would results for increased torque and less lag be more noticeable on a bigger turbo and would the 2871 be too small to really make use of it??
What kind of cost difference between stroker and uprated internals all fitted would i be looking at?
Do people think they are really worth it?
Depends on your budget.
If you can afford it by all means yes otherwise just do the drop in's
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
One thing i have read about stroking is it limits the rpm the engine can take
GT2871R seems more powerful top end and wouldn't want to loose it, is this right
Issam when i have saved some pennies i will email you a shopping list for prices
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
I was just looking into the principles of stroking and that was one of the disadvantages it had
I dont know how much it did limit that why i asked
 

INA

Garrett Super STAR!
Dec 8, 2007
0
0
www.inaengineering.com
One thing i have read about stroking is it limits the rpm the engine can take
GT2871R seems more powerful top end and wouldn't want to loose it, is this right
Issam when i have saved some pennies i will email you a shopping list for prices
The most I would take a hydro lifter motor like the 1.8T to is 7800 rpm's (after that you are just reving for no point).

You will have no issues going to either 2008cc or 2067cc. The only issue with 2067cc displacement is the fact that you cant find 95.5mm stroke crankshafts new so you are at the mercy of used units AND sourcing pistons takes 3-4 weeks. Through a local company we are able to get 92.8mm stroke pistons within a day so thats the reason alot of peeps on here are getting increase displacement parts so fast from us:D
 

grahams81

Active Member
Oct 14, 2010
1,165
6
County Durham
Theres no replacement for displacement !!!!!!!!!!!

I went for the 2067cc route using a crank from a 95.5mm TDI engine (£100 on ebay) the cranks are forged and about 2kg heavy than standard so i had mine lightened and race balanced.

Just finished the engine build so i don't know what it runs like yet - but i'm hoping for good spool up pushing the extra air through the turbo.
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
I have been watching your thread with some interest especially now you are starting the 4wd conversion
I would not be looking to go as big as you though, would go 2008cc instead
just got to save the pounds to fund it all now
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
Will let you know how it goes, got to do some pricing and saving first though
Oistein i surprised you havent stroked yours to lower the spool as you are running an even bigger turbo than mine
Also are you running a largeport head on yours??
 

Gulfstream

Active Member
Jul 31, 2010
507
6
Will let you know how it goes, got to do some pricing and saving first though
Oistein i surprised you havent stroked yours to lower the spool as you are running an even bigger turbo than mine
Also are you running a largeport head on yours??

I was contemplating stroker kits but came to the conclusion in my case Its not worth the extra hassle as I have to pull the engine again and work on it for a week or so. I have 25psi by 3600rpms:

180809_167993266581882_136791243035418_339819_180983_n.jpg


I have the bigport AGU motor with SEM bigport intake yes and honestly I couldnt be happier with it.

As I always crave for more I have decided to do cams and valvetrain + larger turbo next winter. IE mild cams, Ferrea valvetrain and mby PTE5830R would be a nice choice.

For you guys wondering I have to add approx 25-30% fuel above 4000rpms @ WOT to get 0 O2 corrections based on the smallport file. There is no way Id make the nrs I have with a smallport motor.
 

Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
So whilst stroking and forging bottom end and head is off too you would recommend a largeport swap
Just seen the AGU code in your sig too, build up AGU head then replace over BAM
Would you be able to run stock inlet manifold until a larger one was bought??
Surely a bigger turbo is going to be too much through 2wd
 

Gulfstream

Active Member
Jul 31, 2010
507
6
So whilst stroking and forging bottom end and head is off too you would recommend a largeport swap
Just seen the AGU code in your sig too, build up AGU head then replace over BAM
Would you be able to run stock inlet manifold until a larger one was bought??
Surely a bigger turbo is going to be too much through 2wd

I built the AGU bottom with Calico bearings and IE rods when I put the motor in. I have a complete AGU motor as my old BAM went to bed forever. Yea, I could have run the stock AGU inlet albeit that was DBC and my BAM loom is DBW. Would have changed the TB. I bought the SEM intake 70mm TB at the same time I got the AGU motor.

600bhp and FWD? Sure, with slicks ;)

-oh, i see you asked me if I would recommend larger head as well. If you plan to stay on that small turbo theres no point. I dont think a largeport head is worth it unless you go 2871 and up. Those small turbos just dont move enough air. IE, INA, PagParts, Bill Badger will probably give you a better answer than I can.
 
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Ronin225

Active Member
Jan 17, 2008
4,652
22
Worcester
So going purely track then not really road
Did you put a hole in the BAM block to make it unuseable, rod related?
I will look into AGU heads as well
If i was to use a stock inlet manifold i would use stock TB until a larger inlet and probably R32 TB were fitted together
 

Gulfstream

Active Member
Jul 31, 2010
507
6
So going purely track then not really road
Did you put a hole in the BAM block to make it unuseable, rod related?
I will look into AGU heads as well
If i was to use a stock inlet manifold i would use stock TB until a larger inlet and probably R32 TB were fitted together

On streetires I turn the boost down until I have grip at WOT in 3rd gear. MBC.

Yeees, I broke a rod and punched a hole in the side and bottom. Whole car almost burned to the ground. Flames 2m tall. Luckily I stopped 2 house cars and nicked their 4kg powder fire extinguishers. Had to empty both completely.

Saved it tho :)
 

ivo098

Active Member
Apr 29, 2009
222
0
Bulgaria
I have a stroking question that until now nobody answered me.
Is it possible to build 1.9T (1912cc) with FSI/TFSI 92.8mm crank and keep the stock bore to 81mm with some custom rods and the stock engine pistons?
The idea is not to buy new pistons as the stock ones are though enough.
 
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