breeza18 0 Posted April 19, 2011 Report Share Posted April 19, 2011 hi all im thinking of turboing my mk2 vr6. current spec is 6 branch and 268 cams with a stealth remap. ive been searching for turbo info as i was a complete noob to it all but have now come to this........decomp plate,cylinder head rebuildgarrett gt3283 hot side A/R .82cast ebay manifoldintercoolerRRFPRbigger injectors 360cc/440ccand a remap after all running. im hoping this little lot will make me around the 300bhp mark and not spool to early as i dont want the grunt till a little later in the rev range but to the limiter, will this turbo be up to that?am i missing anything?? any further advice? Link to post Share on other sites
legvw 0 Posted April 19, 2011 Report Share Posted April 19, 2011 I wouldn't bother with the rrfpr, if your going to get it mapped.Ebay manifolds aren't the best quality and may crack with the heat over time.You'll need a downpipe and boost pipes fabricating.Is the turbo internally wastegated or will you need an external wastegate? If you want the turbo to kick in later, get it with a bigger a/r, e.g 1.0.You may want to consider arp hardware for your engine too, head bolts and/or rod bolts.What sort of condition is your engine in? Mileage?Lots to think about fella! Link to post Share on other sites
breeza18 0 Posted April 19, 2011 Author Report Share Posted April 19, 2011 what sort of spool do you think this will offer? im looking for 3/3500rpm? its ext wastegate so i know i need one and also know about the boost pipes and blow off valve. as for the engine, 120k but will be getting new chains and guides when i take the head off. wasnt gonna bother with the ARP stuff as im not chasing silly numbers, my golf weighs less than a ton so 300ish will be plenty lol Link to post Share on other sites
legvw 0 Posted April 19, 2011 Report Share Posted April 19, 2011 Your original a/r should be fine for that rpm.Check out the DIY turbo thread, its a good read with plenty of advise. Link to post Share on other sites
bungy 2 Posted April 19, 2011 Report Share Posted April 19, 2011 Might be worth getting a manifold made. Link to post Share on other sites
breeza18 0 Posted April 19, 2011 Author Report Share Posted April 19, 2011 cheers guys i read the diy turbo thread and thats how i got this far, bungy how much we looking at getting a manifold made? been looking for a cast spa one but cant find much without goin to usa. Link to post Share on other sites
bungy 2 Posted April 19, 2011 Report Share Posted April 19, 2011 The problem with the American stuff is they are designed for left hand drive. Link to post Share on other sites
breeza18 0 Posted April 19, 2011 Author Report Share Posted April 19, 2011 yeah figured that much might just run an ebay item to get it up and running then up grade when it gives up. will i need 4inch maf for 300ish bhp? Link to post Share on other sites
FishWick 21 Posted April 20, 2011 Report Share Posted April 20, 2011 When you say ebay manifold, do you mean the ATP copy? Did I put in the turbo guide how to modify it to prevent warping?Yep, Rising rate reg not needed if fitting larger injectors. That's the old school quick and dirty way of doing it!The GT32 is OK and all, but if you're wanting to put those 268s to good use, you need the turbo flow to match.If you want full boost by 4000rpm, go for the 1.06 turbine housing as that does pull harder than the 0.82 flavour past 6K. As you say, you have a MK2 so you can afford to sacrifice a few torques low down ;-) And personally, if you're going for a tasty ball bearing 35R or T60, run it at a bar. It's in it's sweet zone. Anything less isn't really doing it any justice!If you want spool at 3500rpm and want it holding to 7000rpm (or more), then GT3582R is the size you should be looking at, or T60-1, either ball bearing or plain bearings. Both REALLY suit the VR6 perfectly. Link to post Share on other sites
breeza18 0 Posted April 20, 2011 Author Report Share Posted April 20, 2011 hi kev, thanks for the input, ive just bit the bullit and got what i think is a dirt cheap brand new garrett gt32, problem is it looks a bit small on the compressor side, these are the markings......compressor A/R .42turbine A/R .82 the inlet to the turbo is about 53mm but reduces to 40mmturbine outlet is 70mm reducing to 50mm at the blades, does anyone think the compreesor is the wrong size?? Link to post Share on other sites
FishWick 21 Posted April 20, 2011 Report Share Posted April 20, 2011 Turbine AR is OK. Compresso AR you can ignore really. Is it a 2" outlet? The T60-1 and GT35 have 2.5" AR.70 outlets, which is handy if you want 2.5" boost pipes all the way through.The GT3283 should be an ideal middle ground between the GT30 and GT35, although I have looked at it's exact specs yet.Got a link to the one you bought? Link to post Share on other sites
breeza18 0 Posted April 20, 2011 Author Report Share Posted April 20, 2011 i bought it off a local chap so no link to the turbo im affraid ive just measured the compressor out let and its 2 inch external and 1.5 internal. can i ask where you would get the info kev as i cant find it on the garret website, i have however found its from a perkins diesel engine at 3.9 litre, keep the info comming please kev as im hoping ive not dropped a b*****k with this one!a few pictures for you all........ Link to post Share on other sites
jims13 6 Posted April 20, 2011 Report Share Posted April 20, 2011 if you get the info of the badge stamoped perkins in your last pic, you may be able to get a compressor map for it.if your having trouble sourcing items check out the traders section , as i offer turbo parts or kits depending on your need . Link to post Share on other sites
breeza18 0 Posted April 20, 2011 Author Report Share Posted April 20, 2011 hi jim, ive searched the perkins number and can find a little bit of info but no compressor map, the perkins number is 2674398. thanks for the heads up on the traders section, gonnna have a look now Link to post Share on other sites
UnitedMotorsport 55 Posted April 20, 2011 Report Share Posted April 20, 2011 Looks like a T3 sized compressor Link to post Share on other sites
jims13 6 Posted April 20, 2011 Report Share Posted April 20, 2011 no problem , its all ordered to your need . no pressure all information is free Link to post Share on other sites
FishWick 21 Posted April 21, 2011 Report Share Posted April 21, 2011 i bought it off a local chap so no link to the turbo im affraid ive just measured the compressor out let and its 2 inch external and 1.5 internal. can i ask where you would get the info kev as i cant find it on the garret website' date=' i have however found its from a perkins diesel engine at 3.9 litre, keep the info comming please kev as im hoping ive not dropped a b*****k with this one!a few pictures for you all........[img']http://i76.photobucket.com/albums/j37/gunit-84/utf-8BSU1HMDAxODQtMjAxMTA0MjAtMTgxNi5qcGc.jpgCan't see the pics but yeah, it's a Garrett TA3107. Like you, I can find no info on it other than it being fitted to an agricultural diesel generator with a max rpm of 2200 :-) I did see a site advertising one for < £400 brand new though. Hope you didn't pay more than that for it!Personally I wouldn't use it. A turbo made for a diesel generator may not perform to the same standards as one made for a petrol engine and it certainly isn't going to be too happy with Exhaust gas temps more than twice the rating it was designed for.It's up to you mate, it might work really well, it might not. It's hard to say for sure! Link to post Share on other sites
breeza18 0 Posted April 23, 2011 Author Report Share Posted April 23, 2011 cheers Kev, deffo didnt pay that much for it! i know what your saying about the exhaust temps being completely different but folk have been using holsets and alike off cummins diesels for years with out problem? think il stick it on ebay and if it sells il use the money for a different turbo, if it doesnt then i might stick it on and see how it goes. has anyone run a holset/garrett turbo from a diesel on here? Link to post Share on other sites
breeza18 0 Posted April 25, 2011 Author Report Share Posted April 25, 2011 change of plan, managed to get myself a holset H1C dirt cheap but needs a rebuild. gonna couple this to a homebrew ram horn manifold. Link to post Share on other sites
breeza18 0 Posted May 18, 2011 Author Report Share Posted May 18, 2011 ok so bit of an up date........bought myself a bigger turbo! its a holset H1C and its a lot bigger than the last effort. it has a t3 flange fitment so i bought a weld on t3 flange to make my manifold. below is a picture of my plan. can anyone see this being an issue with a standard obd1 inlet manifold? i know it needs one pipe making longer and a wastegate flange putting in but you get the idea. one more question.......after offering up my weld on T3 flange is it ok to port the area marked on this next picture? Link to post Share on other sites
breeza18 0 Posted May 18, 2011 Author Report Share Posted May 18, 2011 just to add the turbine housing is 18cm so similar to 1.00A/R Link to post Share on other sites
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