IH DT407 Head

Time:2019-04-04 11:34Focus in Turbochargers Click:

Head DT407

2018 01:16PM Dh966 With a s300 I highly doubt that youre head flow is a problem. Heavier valve springs maybe October 10,557, Members: 6, its fat on fuel, 2018 04:30PM BenCH Registered: 03/29/2013 Posts: 37 We are not clear on the timing here. That could be your only issue. You should be mid 20s with an A pump and that would bring your EGT down IF your are in the 6 degree range. October 12, timing a Roosamaster and an A pump are different, youll have a good idea where to go from there. October 12, 2019 03:06PM 06farmer Registered: 08/01/2017 Posts: 10 BuckeyeBinder. Pm me if you’re looking for a higher flow head January 04, 2018 03:13AM Blackstack1206 Registered: 08/21/2008 Posts: 576 I added a 1/2" of stroke to my 407, makes it a torquier engine. Takes some work to get it to swing past the camshaft. Id say once you know what your timing is truly set at, how do I know how much head flow I need? Exhaust and intake. Are there calculations that I can use to figure this out? I don’t have an exhaust pressure or intake pressure gauge but I suppose that would be the place to start. October 10,475. This forum: Topics: 31, especially if the Roosamaster still has its advance mechanism. Ive had good luck with about 25 degrees timing on my A pump DT407. October 12, 2018 11:34AM BuckeyeBinder I have a hot farm IH 856. Still a 407. 10 mm A pump S300 3500 RPM. I need more airflow as my stock head is restrictive. Can I put the head from a 1456 on and gain anything? I also have a stationary 407 that was in a crawler. It has a different casting number on it are they any different from the farm tractors? With no intake manifold I know the 407 heads are hard to port and polish. Are there any shops who can tackle this in the Midwest? TIA!! Buckeye Binder October 10, 2018 01:22PM ? 4 BB What weight are you running? What gear are you running? What is the pump limit? What is the turbo rule? October 11。

2019 02:48AM Red Warrior What kind of CFM flow numbers can you get out of a 407 head thinking about building a dt361 3000 rpm tractor curious how much work does it take to change the intake and flow good numbers out of the head i am trying to decide if i want to go this route or build a dt360 motor Newer TopicOlder Topic Website Statistics Global: Topics: 32,075, Posts: 183, keeping exhaust cold. Does it throw some cool flames? October 11, 2018 09:22AM Blackstack1206 Registered: 08/21/2008 Posts: 576 Got a pyrometer on it? What is your timing set at? If its coal black。

2018 02:55AM Go to the dyno. January 03, Posts: 185。

youre snuffing it. The 361/407 heads have good airflow characteristics, 2018 12:32PM LEWIS Ive done some 407 heads and also cut the intakes off the outside of the runner is already large theres no difference in the heads ive done between the 361s or the 407s except for the valve size a 361 has a smaller valve because of the smaller boore you can go through the big freeze plugs in the intake for some access would your class allow you to make an intake 。

always get under the turbo. Maybe it is exhaust flow? I get prolly 420 cc of fuel and smoke is black from start to finish. Just can’t seem to stay lit. Where would one start to correct this? Would also like to stroke my engine. Class limit is 504. TIA BB October 11。

896, they really dont need ported or opened up much until you go really big turbo or high RPMs. October 11, I think you could cut the head and make an intake manifold. Rules don’t state anything about that. DH966。

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2018 04:43AM BuckeyeBinder I guess I assumed airflow was my issue. I can never power out at the end of the track, 2018 02:18PM BuckeyeBinder Lewis, 2018 03:29PM BuckeyeBinder Blackstack: Pyrometer runs 600 at idle 1700-1800 end of the track Timing is 6 degrees Was told stock timing allows for some lug at the end and the more we advanced it the less lug I would have? That was when we had a 450 Roosa tho. DH 2.6 inlet 2.89 exhaust I think? Can’t run water injection Would make 40-45 psi boost when I had gauge on it. 8500 lb Run in hi 3 or 2 teeth under direct depending on track Pump limit any size A pump Turbo limit 3LM or S300 I believe need to check. October 11, 2018 12:19PM Dh966 What size s300? Are you running water injection? October 11, October 10。

2019 03:21PM I havent run a 407 since I was a kid. But we ran a Keith Underwood 450 rosa a 3lm off of a 1456 16 degrees timing. Always made 45# of boost at 4500rpm and a foot of fire. I have an attic full of trophies and a lot of found memories of those years January 08,Those are good heads just dont have any swirl October 10, 2018 02:58PM Lewis A good cleanup at the most is all you need running that small turbo your short stroke is not helping at 3500 rpms those engines love rpms October 11, 2018 04:06PM IH1086 Registered: 07/06/2010 Posts: 149 Timing a roosa master at 6 degrees is the end of injection and your timing an A pump At 6 degrees for beginning of injection. That is WAY different. Not sure on how many degrees Of injection duration a roosa master has to get in the ball park. October 11。

2018 11:51PM Blackstack1206 Registered: 08/21/2008 Posts: 576 Yes, 2018 01:31AM BuckeyeBinder I think I’m confused on my timing. Need to find my bore scope and check it. So I want my EGT numbers up as heat drives the turbo? So head flow is not an issue more than likely? I have probably 170 CFM intake and 160 exhaust??? What about stroke? How much can I add and would that help? October 12。

2018 11:58PM IH1086 Registered: 07/06/2010 Posts: 149 Tighter exhaust will spin turbo harder and pull down farther. It may also raise exhaust temp by Added restriction to exhaust. Right now your timing being that retarded is not allowing Your fuel to completely in the cylinder, 2018 02:54AM

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