My ongoing project car

N.RotaryTech · 04-18-2011, 03:45 PM

I figured they handle some heat & pressure from what they're originally designed for.
I don't know how it will handle oil though.

I'm definitely putting its durability to the test.

djmtsu · 04-22-2011, 08:31 AM

I'm wondering if that oil feed line is TOO big for the turbo.

You might be feeding it too much oil, thus making the turbo smoke. You know the stock turbo line has a restriction pill, and many aftermarket turbos also require some kind of restriction.

Just a thought.

N.RotaryTech · 04-23-2011, 08:34 PM

Ive taken it for few long drives today.
Just this past hour I was really boosting it in all gears except 5th.
Because I have a 10lbs spring I had to vari the throttle, keep boost around 5-6psi.
Things are holding up so far.
As far as oil temps go, Ive seen up to 195*F.

One issue is, even though I'm able to floor it in 1st gear, it bogs down with fuel after 6k rpms.
Ive discovered this might be something having to do with the stock ECU and its fuel map.
My half bridge port motor did this too, it would bog down after 7k rpms.
So I guess a standalone would fix those problems.

Picture from today.

N.RotaryTech · 04-25-2011, 10:11 AM

3 days till I leave for DGRR'11.

Sunday I developed a tire problem with the bead not sealing.
A couple days ago I swapped 3 tires with used ones I had. One of them has the bead sealing problem.
I'm getting those swapped again with two more tires I have. Hopefully that will take care of my tires.

Next, Im thinking of swapping in a Tii fuel pump. I think that will solve my lean issues at higher boost (6-10psi). But first Ive got to find it in a garage full of parts.

N.RotaryTech · 04-27-2011, 12:25 PM

So I haven't found the fuel pump, I'm just going with what its got.
The 7 is all ready to go to DGRR, just need to fill up the tank w/premium, will do tomorrow.

I'm going to post the starting mileage of this adventure, to see how much the whole trip comes to.

t_g_farrell · 04-27-2011, 01:06 PM

See you at the mitty sunday.

Keep between the lines and right side up until then.

N.RotaryTech · 04-27-2011, 06:57 PM

^haha, good advice.

So the odometer reads 200,855 miles at the start of this trip.

I probably won't be back posting till after DGRR.

N.RotaryTech · 05-02-2011, 09:06 AM

So the 7 made it up there, then to the Mitty, and back home with no major problems.
Odometer reads: 202,095 miles, so that's 1,240 miles total trip.

While up there, I did replace the vac hose going from the turbo to the wastegate with a SS braided hose from advanced. The previous vac hoes was melting due to the exhaust leak.

My oil temps while boosting on the dragon, one time went to 230F, then another time went to 248F.
So while boosting on the dragon, oil temps ranged from 220F - 250F. All other times oil temps ranged under 200F.

My gas mileage was 19mpg w/o boost, and 15mpg w/boost.

I had a blast up there. It was a breeze getting up those hills with boost.

N.RotaryTech · 07-23-2011, 12:39 PM

So my Lowes faucet lines that feed oil to my turbo have been replaced with fuel hose for now.
Because the faucet line on the turbo side was leaking fairly bad. I thought it was a loose connection but instead the line wore out.
Hopefully the fuel line will last more than a 1k miles.

Also my Blits BOV became stuck closed recently.
I took it off, sprayed it with PB blaster and wd40 took a hammer and socket to the piston, and got it to work again.
Guess I need to oil it every once in a while.

mazda244 · 09-22-2011, 09:20 PM

looks great good luck

N.RotaryTech · 11-12-2011, 07:15 AM

Alright, time for an update.

So the turbo that I got for this car was cheap and used, and its been smoking blue smoke ever since I put it on.
Around the beginning of October I decided to start fixing the turbo.
From being lazy and stuff, the car has sat for a month in the garage.
But I finally got the turbo rebuilt, and yesterday I finished putting the car all back together.

I start it up, back out of the garage, and the car starts smoking like crazy.
White smoke billowing out of the exhaust pipes.
Shut it down after it warms up, check things out, nothing leaks, all good.
Start it up again, drive around the block, smoke screen all the way, get back, shut it down again.
Stare at the car with disappointed face, thinking, got to be the coolant seals.
Start it up again (btw, starting is like normal every time) take it for a longer drive down the interstate to brothers house.
Right after the drive there are bubbles in the overflow tank and its been drained a little bit.
A little while later uncap the thermostat pressure cap, no bubbles.
Also took off the pipe to the turbo inlet, no residue of oil or anything.
Anyway drive back a little after midnight, so I don't annoy any one with my smoke screen car.
Coolant buzzer starts randomly turning on an off.
About 1/2 way to 3/4 way home, cruising, I see crown vic headlights on my tail, Oh shit, its a cop.
He pulls beside me, I look over with the coolant buzzer going off, I keep driving like nothings wrong, cop backs off and turns around. Whew.

So I got it back home.

Today I'm going to take off the turbo, get it running NA, see if it still smoking without the turbo.

N.RotaryTech · 11-12-2011, 05:12 PM

Looks like I screwed up the turbo rebuild. Have to do it again.

N.RotaryTech · 03-28-2012, 07:43 PM

Here are some pics of what I've been working on.
1st something I'm impressed with.
My front iron on this motor had damage to one of the coolant seal tracts. I asked a local friend if he could repair it by welding it. This is how it turned out.

Fresh painted irons:

Clean! rotors:

More to come.

N.RotaryTech · 10-12-2012, 08:43 PM

More is here.

I don't think I have any new photos, but these are basically what the ports on this motor look like.

The center iron ports:

The end iron ports:

The exhaust ports: Kind of a before & after.

So the end irons of this motor are my half bridge-port irons. The front iron died of coolant seal tract failure but was repaired.
The center iron with its port-job was from the original motor.
The rotor housings are from the original motor, but this time ported.
The rotors are 9.7 compression.
Electronics:
Haltech E6K, with 550's secondary's, no MAF.
Full RB exhaust.
N/A.

Been working on this for a few weeks.
Got it started & running today.
Drivable.
Tuning: still in progress.

N.RotaryTech · 10-14-2012, 10:12 AM

So the half-bridge-port is back in action.

I was just getting bored, so I decided to rebuild the bridge-port motor and swap engines.

Just finished up the break-in tune, so I just need to put the break-in miles on it. Then tune for the "go fast, fun time" of the motor.

This engine is way more drivable at low rpms than when it was running off the stock ecu.
And it doesn't quite sound like a bridge-port, might be because of bigger exhaust ports & RB header. Idk.

04-22-2011, 08:31 AM	#62
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	I'm wondering if that oil feed line is TOO big for the turbo. You might be feeding it too much oil, thus making the turbo smoke. You know the stock turbo line has a restriction pill, and many aftermarket turbos also require some kind of restriction. Just a thought. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

04-23-2011, 08:34 PM	#63
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	Ive taken it for few long drives today. Just this past hour I was really boosting it in all gears except 5th. Because I have a 10lbs spring I had to vari the throttle, keep boost around 5-6psi. Things are holding up so far. As far as oil temps go, Ive seen up to 195*F. One issue is, even though I'm able to floor it in 1st gear, it bogs down with fuel after 6k rpms. Ive discovered this might be something having to do with the stock ECU and its fuel map. My half bridge port motor did this too, it would bog down after 7k rpms. So I guess a standalone would fix those problems. Picture from today. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

04-27-2011, 01:06 PM	#66
t_g_farrell Waffles - hmmm good Join Date: Aug 2008 Location: Huntersville, NC iTrader: (0) Posts: 757 Rep Power: 0	See you at the mitty sunday. Keep between the lines and right side up until then. __________________ 1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00

05-02-2011, 09:06 AM	#68
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	My DGRR'11 aftermath. So the 7 made it up there, then to the Mitty, and back home with no major problems. Odometer reads: 202,095 miles, so that's 1,240 miles total trip. While up there, I did replace the vac hose going from the turbo to the wastegate with a SS braided hose from advanced. The previous vac hoes was melting due to the exhaust leak. My oil temps while boosting on the dragon, one time went to 230F, then another time went to 248F. So while boosting on the dragon, oil temps ranged from 220F - 250F. All other times oil temps ranged under 200F. My gas mileage was 19mpg w/o boost, and 15mpg w/boost. I had a blast up there. It was a breeze getting up those hills with boost. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

11-12-2011, 07:15 AM	#71
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	Alright, time for an update. So the turbo that I got for this car was cheap and used, and its been smoking blue smoke ever since I put it on. Around the beginning of October I decided to start fixing the turbo. From being lazy and stuff, the car has sat for a month in the garage. But I finally got the turbo rebuilt, and yesterday I finished putting the car all back together. I start it up, back out of the garage, and the car starts smoking like crazy. White smoke billowing out of the exhaust pipes. Shut it down after it warms up, check things out, nothing leaks, all good. Start it up again, drive around the block, smoke screen all the way, get back, shut it down again. Stare at the car with disappointed face, thinking, got to be the coolant seals. Start it up again (btw, starting is like normal every time) take it for a longer drive down the interstate to brothers house. Right after the drive there are bubbles in the overflow tank and its been drained a little bit. A little while later uncap the thermostat pressure cap, no bubbles. Also took off the pipe to the turbo inlet, no residue of oil or anything. Anyway drive back a little after midnight, so I don't annoy any one with my smoke screen car. Coolant buzzer starts randomly turning on an off. About 1/2 way to 3/4 way home, cruising, I see crown vic headlights on my tail, Oh shit, its a cop. He pulls beside me, I look over with the coolant buzzer going off, I keep driving like nothings wrong, cop backs off and turns around. Whew. So I got it back home. Today I'm going to take off the turbo, get it running NA, see if it still smoking without the turbo. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

04-18-2011, 03:45 PM	#61
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	I figured they handle some heat & pressure from what they're originally designed for. I don't know how it will handle oil though. I'm definitely putting its durability to the test.

04-25-2011, 10:11 AM	#64
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	3 days till I leave for DGRR'11. Sunday I developed a tire problem with the bead not sealing. A couple days ago I swapped 3 tires with used ones I had. One of them has the bead sealing problem. I'm getting those swapped again with two more tires I have. Hopefully that will take care of my tires. Next, Im thinking of swapping in a Tii fuel pump. I think that will solve my lean issues at higher boost (6-10psi). But first Ive got to find it in a garage full of parts.

04-27-2011, 12:25 PM	#65
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	So I haven't found the fuel pump, I'm just going with what its got. The 7 is all ready to go to DGRR, just need to fill up the tank w/premium, will do tomorrow. I'm going to post the starting mileage of this adventure, to see how much the whole trip comes to.

04-27-2011, 06:57 PM	#67
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	^haha, good advice. So the odometer reads 200,855 miles at the start of this trip. I probably won't be back posting till after DGRR.

07-23-2011, 12:39 PM	#69
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	So my Lowes faucet lines that feed oil to my turbo have been replaced with fuel hose for now. Because the faucet line on the turbo side was leaking fairly bad. I thought it was a loose connection but instead the line wore out. Hopefully the fuel line will last more than a 1k miles. Also my Blits BOV became stuck closed recently. I took it off, sprayed it with PB blaster and wd40 took a hammer and socket to the piston, and got it to work again. Guess I need to oil it every once in a while.

09-22-2011, 09:20 PM	#70
mazda244 The Newbie Join Date: Sep 2011 iTrader: (0) Posts: 20 Rep Power: 0	looks great good luck

11-12-2011, 05:12 PM	#72
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	Looks like I screwed up the turbo rebuild. Have to do it again.

03-28-2012, 07:43 PM	#73
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	Sneak peek on what I'm currently working on. Here are some pics of what I've been working on. 1st something I'm impressed with. My front iron on this motor had damage to one of the coolant seal tracts. I asked a local friend if he could repair it by welding it. This is how it turned out. Fresh painted irons: Clean! rotors: More to come. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

10-12-2012, 08:43 PM	#74
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	More is here. I don't think I have any new photos, but these are basically what the ports on this motor look like. The center iron ports: The end iron ports: The exhaust ports: Kind of a before & after. So the end irons of this motor are my half bridge-port irons. The front iron died of coolant seal tract failure but was repaired. The center iron with its port-job was from the original motor. The rotor housings are from the original motor, but this time ported. The rotors are 9.7 compression. Electronics: Haltech E6K, with 550's secondary's, no MAF. Full RB exhaust. N/A. Been working on this for a few weeks. Got it started & running today. Drivable. Tuning: still in progress. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

10-14-2012, 10:12 AM	#75
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC iTrader: (0) Posts: 552 Rep Power: 17	So the half-bridge-port is back in action. I was just getting bored, so I decided to rebuild the bridge-port motor and swap engines. Just finished up the break-in tune, so I just need to put the break-in miles on it. Then tune for the "go fast, fun time" of the motor. This engine is way more drivable at low rpms than when it was running off the stock ecu. And it doesn't quite sound like a bridge-port, might be because of bigger exhaust ports & RB header. Idk.