rke_011 Posted March 22, 2015 Report Posted March 22, 2015 Anyone have experience with draw through turbo setups? Got mine running pretty well.. but seems restricted, when revving it seems sluggish and restricted.. any ideas why? When driving higher rev range seems ok.. but wondering what can cause it to seem like it struggles to rev? I'm thinking timing or flywheel too heavy.. happy for opinions. T2 turbo a inch and 3 quarter Stromberg su thing. Quote
Feral4K Posted March 22, 2015 Report Posted March 22, 2015 Is it smokey? What do the plugs look like after a good run, also check the compressor wheel ,drawthrough can send all sorts of stuff into there which may have chewed it up... Quote
ke70dave Posted March 22, 2015 Report Posted March 22, 2015 How are you controlling ignition timing? Quote
kickn5k Posted March 23, 2015 Report Posted March 23, 2015 (edited) 2.5" press bent  Should be plenty. What's timing at? Edited March 23, 2015 by kickn5k Quote
Taz_Rx Posted March 24, 2015 Report Posted March 24, 2015 Â Â Should be plenty. What's timing at? Â I found exhaust size and back pressure can make a fair bit of difference in mid range response and spool rate. What type of muffler do you have on the end of said 2.5" pipe? Quote
rke_011 Posted March 24, 2015 Author Report Posted March 24, 2015 i think it is straight through .. still makes the thing silent though  maybe I'm expecting the old 4k to rev too much, but just doesnt seem right.. maybe its the exhause too big for down low... Quote
Taz_Rx Posted March 24, 2015 Report Posted March 24, 2015 If its straight through with no muffler I would highly recommend putting one on. You'll be amazed what it will do for the mid range. When my old one snapped off, I gained maybe just a slight bit more flow right at the top of the rev range but it want worth what was lost in the mid. Got a new offset straight through put on a couple of weeks later and was really surprised what I was missing. Quote
rke_011 Posted March 24, 2015 Author Report Posted March 24, 2015 Nahh I got a straight through baffled looking thing.. timing now at 25° and seems to make a difference... Goes better too... For a $50 4k it got to 60mph pretty quick.. seems the fun starts at around 10psi Quote
Taz_Rx Posted March 25, 2015 Report Posted March 25, 2015 Hehe, you think 10 is fun...wind it up to around 15-17! At least with the draw-through you don't have to worry about fuel pressure issues when upping the boost. Quote
rke_011 Posted March 25, 2015 Author Report Posted March 25, 2015 Need something that will take boost.. wonder if 15psi will be ok for a short squirt :). Goes well for a prehistoric turbo setup... Need a Damn tachometer though no idea how hard I'm revving it Quote
Taz_Rx Posted March 25, 2015 Report Posted March 25, 2015 If its tuned well and maintained it will take it, my motors have never been anything real spacial. With a t2 I reckon you'd be better off grabbing another cog than revving the date out of it. Quote
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