This would be going on a 99 5.4 automatic 4x4.

Came across a decent deal on a garrett turbo. The inlet side, aluminum cover says A/R .50 M43. On the part that you mount to flange in there it has a stamp of .63.

There was no plate with model number anywhere. There are however a set of numbers.

on the center section there is 430683 -11 cast in housing.

On the exhaust flange there are also two number cas on each side: 20357 on one side and 0358 on the other.

The exhaust side outlet measure at 2.25 inches. The intake side where the filter goes measure around 3 inches.

I measure the inlet side wheel to figure out the trim... 3 inches for the larger fins and 2 inches for the smaller fins.

If my calculations is correct come out to be right around a 43 trim...

Anyone have input if this would work on my 5.4? I'm only looking to push around 6-8psi....daily driver of course.

Anyone that know more about turbos, is this too small or will it work? I googled and really didn't find to much info. The little I did find most of the number didn't match to what I had.

If the .63 is correct on the exhaust side it should spool up nicely. I guess the trim is where I would be hurting. Would i Just run out of power on the top end, or would it just come on to quickly?

Thanks for any input.

 

quess ill jump in

i have the same engine and wanting to go turbo as well.

its assumed you plan on a remote style setup.

i dont know much about garrets but that sounds way small. the 43 trim is way off. also the 2.25 down pipe is an indication, good for a 4 banger. yes the .63 a/r would spool quickly, on a honda. youd prolly boost at idle. my understanding is you can compensate; large turbo= lower A/R VS small turbo = larger A/R.

having that small of a turbo would run hot and run out of steam quickly. apparently boost later in the RPM also helps from throwing rods. maybe something to consider. a larger turbo will be more efficient and less of a bottleneck before boost comes on.

STS uses a 62mm (62trim) and its enough to blow stock engine and has virtually no lag. its a proven setup

people say that the cummins Holset hx35 turbos are too small and they are 56mm/58mm. although ive seen 350 sbc push out over 500hp and 4.6 stangs run 11 1/4s with them so IDK. going from 56mm to 61mm is not much of a difference IMO.

the hx40 would be a good choice as they flow a little better and some have the t4 flange, they can be found on 8.3 cummins. this is what im looking for.

i am no expert, maybe youd have better luck at the turboforums.com
remember thier are a lot more costs then just the turbo.
good luck on the build, need more turbo builds!!!!

 

You may look at the 5.9 H.O. cummins turbos and get an idea for the size engine. I would think that would be as close as you could get in the 5 litre range of engines.

 

turbo sizing for gas and diesels are totally different. the 5.9 cummins turbo are used on 4 bangers with great success. like the DSMs and 2.3 fords. remember diesel exhaust is slow moving, a diesel needs boost immediatly, and a diesel has half of the RPM range to work with. they say what ever diesel HP rating you can double it for a gasser. whats more important is the CFM the turbo is rated. for every 1.5 cfm = 1hp. all the 5.9 cummins holset s use the restrictive t3 flange and and have tiny exhaust A/R witch become a bottle neck. if you did go the the 5.9 cummins route avoid the hy series all together and focus on a 7 blade turbine hx35, thats the only one that would flow enough. the hx35 come in 56 and 58mm sizes to give you an idea. many people would still call those to small on a v8 application.

 

I ended up getting a WH1c from a cummins. Yes, planning on a rear mount setup, or in the bay with taking the exhaust feom the y back into the bay and mount the turbo where its sits in a cummins. If i go that route i wont have to worry about oil pump. Just not sure everything will fit.

Either way since i still have all four cats, i think they slow the exhaust down enouph not to overspin or overwork the WH1c.


Still have a lot or research to do....what size injectors, bigger fuel pump, and if i can run the Mass Airflow sensor or have to go another route. Will see.

 

the whc1 is a like a small hx35. i think its a 54mm ish turbo. at least it will spool quick it should make no more then 300-350 max rwhp by my questimates. i think thats 33lb injector terriitory. like off a 2011 mustang. the newer f150 can do hp that on a stock pump.

i would at least remove the rear cats. a wastegate s job is to control the spin of the turbo.

the stock maf is fine.

i hope you can weld.....and have a fatty wallet and a compentant tuner

 

Go to garritt.com and down load their ap. With just a few inputs you can get some prety good info.