Jump to content
HybridZ

My official L31DETT RHD thread.


Recommended Posts

Bryan - I see you said you got those 'cheap new turbos' for $400 for both. Are those the eBay turbos that everyone talks about, or did you just get a good deal on name brand ones somewhere?

 

If they're the eBay specials, please keep us updated on their performance/quality. It's always interesting to see how good/bad they are.

Link to post
Share on other sites
  • Replies 473
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Ok, so look here for updates every couple days As Ill just keep adding to this thread for my updates of my progress on the L31DETT RHD car. I got the intercooler installed, as well as the alluminum r

There is ALOT of cost in time that has gone into this project. Over 500 Man hours Between my father and I for sure. We have been doing LOTS of calculations, trial and error, quality controll, etc.

These are cheap ebay turbos. Here is the auction I won.

 

 

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=020&sspagename=STRK%3AMEWN%3AIT&viewitem=&item=300179128771&rd=1

 

 

 

I have known other guys to run cheapo turbos, they say the MAIN thing is the compresser housings cracking, as SOME of them are "glued" together. You can tell which ones are glued, and which ones are fuesed by looking at them, and these that I got are NOT glued, so should be ok. We will find out anyways. Even if they dont last forever, atleast I can know if I like the ratios and size of them, then if they break (doughtful) then I will buy genuine garrets.

Link to post
Share on other sites

Ok, so tonight I started porting on the head. I did NOT port it before, and it was in 100% stock form, as far as valves, ports, etc. Go. Here are the Flow Numbers. It took ALOT to get these ports like this. These ports are actually maxed out. There are no more restrictions in the ports what so ever, atleast not with these sized valves. With my new cams, Turbos and the increased Head Flow, I dont see how 700+ hp is out of line.

 

To give an idea, a stock P90 flows 172, my highest modified P90 flows about 225 cfm. Plus the dohc head is a cross flow.

 

Heres the numbers.

 

 

Intake Flow

 

lift Stock Modified

0.2 156.2 165.7

0.25 198.8 227.2

0.3 224.8 260.3

0.35 248.5 276.9

0.4 248.5 288.7

0.45 248.5 300.5

0.5 248.5 305.3

0.55 248.5 310.0

 

 

Exhaust Flow

 

Lift STOCK MODIFIED

0.2 146.7 151.5

0.25 170.4 182.2

0.3 182.2 191.7

0.35 196.4 198.8

0.4 201.1 208.2

0.45 201.1 217.7

0.5 201.1 222.4

0.55 201.1 224.8

Link to post
Share on other sites

I just looked on this page here http://users.erols.com/srweiss/tablehdc.htm

 

 

And other head flows are as follow.

 

STOCK 2jz= 225 and 142 at .5"

 

2jz M2 Systems race ported= 285 175 at .5"

 

 

PORTED RB26= 289 222 at .5"

 

7mgte stock= 180 133 at .5"

 

PORTED 7mgte= 211 145 at .5"

 

 

So Seems to hold pretty well compared to these heads.

Link to post
Share on other sites

Bryan here is a question those flow #'s were taken with the valves in place @ .5 lift right? Is that the standard practice when measuring the "flow" capabilities of a particular head. Great work so far!!!! I live in Phoenix, about 20 mins away from your shop. I was hoping to see the beast in person would that be cool with you after you get it running again.

Link to post
Share on other sites
Bryan here is a question those flow #'s were taken with the valves in place @ .5 lift right? Is that the standard practice when measuring the "flow" capabilities of a particular head.

 

If you read the graph, flow was measured at varying valve lifts from 0.20" to 0.55" in 0.05" increments. And yes that's how it's generally done.

 

Nice improvement over stock, btw. Interesting that as much as that head flows stock, it was pretty much done at ~0.35" valve lift.

Link to post
Share on other sites

×
×
  • Create New...