Damn stupid home mechanics
04-12-03, 06:16 PM
#1
Damn stupid home mechanics
2 hours last night, 3 hours today. One of the previous owners was a moron, and I can tell they once had a downpipe and put back the pre-cat to sell it. I've seen roadside mechanics in 3rd world countries who did a better job.
1) the cat-precat nuts were not stock. One was a 19mm castle nut, the other was 21mm plain hex nut with a plain washer and lockwasher underneath. They were definitely not torqued correctly. Fortunately, the dealer had new nuts in stock.
2) one of the dp studs was already broken off. The stupid SOB used a snapped stud to put it back together! I was wondering why that stud looked so short! He also had all the studs in backwards!
3) getting in behind the y-pipe (I'm replacing that too), I find out that the Si hose job wasn't done for the hoses nearest the turbos. Considering that's the hottest part of the engine, I'm going to have to go in and do them myself too. Anyone got some scrap Si hoses laying around?
To top things off, my RX7Store SS dp was defective - the cat-side flange was warped (won't seal) and the bolt holes are too close by .155". Don't buy this dp: the welding of the flange is done last in the fabrication, so there is no correction for shrink or warpage. I'm going to try and trade in for a M2 dp. Is this the best built pipe around? Cause I'm tired of F'n around with cheap **** parts.
Ugh. Time for a ****, shave, shower.
Dave
1) the cat-precat nuts were not stock. One was a 19mm castle nut, the other was 21mm plain hex nut with a plain washer and lockwasher underneath. They were definitely not torqued correctly. Fortunately, the dealer had new nuts in stock.
2) one of the dp studs was already broken off. The stupid SOB used a snapped stud to put it back together! I was wondering why that stud looked so short! He also had all the studs in backwards!
3) getting in behind the y-pipe (I'm replacing that too), I find out that the Si hose job wasn't done for the hoses nearest the turbos. Considering that's the hottest part of the engine, I'm going to have to go in and do them myself too. Anyone got some scrap Si hoses laying around?
To top things off, my RX7Store SS dp was defective - the cat-side flange was warped (won't seal) and the bolt holes are too close by .155". Don't buy this dp: the welding of the flange is done last in the fabrication, so there is no correction for shrink or warpage. I'm going to try and trade in for a M2 dp. Is this the best built pipe around? Cause I'm tired of F'n around with cheap **** parts.
Ugh. Time for a ****, shave, shower.
Dave
04-12-03, 07:37 PM
#3
The warp is really just the flange bent about where it meets the pipe. It would be about 1/8" off at the end against cat flange.
The holes are off .155", which would be a PITA with a dremel.
Sorry, but for $250 I expect the flange to be at least nearly flat and the holes within 1/8".
Dave
The holes are off .155", which would be a PITA with a dremel.
Sorry, but for $250 I expect the flange to be at least nearly flat and the holes within 1/8".
Dave
04-12-03, 07:53 PM
#5
Doritos on a toothpick
nah...just get some duct tape and smaller bolts...lol....(return it and dont forget, most of these parts from online stores are drop-shipped...so itll probably need to be returned to the manufacturer)...jason will help ya out...dont worry...
04-13-03, 10:23 AM
#6
I love when things work
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same with me, my downpipe bolts, where it meets the midpipe, are too close. I bought it used so I'm just gonna throw some smaller bolts on there, instead of 14mm, i'll go with a 12mm.
04-13-03, 10:31 AM
#7
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I think one of the stock bolts on the precat is a different size than the other 3. Seem to recall that and I thought it was weird. How can the stud be installed backwards? It's screwed onto the manifold extension so it's gotta go in CW. Weird...
Anyhow, maybe the previous jobs were done by a cheap shop, not by the owner. I have a hard time thinking of an owner who go thru the trouble of putting in a dp and changing it out and still don't do the job right.
Anyhow, maybe the previous jobs were done by a cheap shop, not by the owner. I have a hard time thinking of an owner who go thru the trouble of putting in a dp and changing it out and still don't do the job right.
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04-13-03, 11:26 AM
#8
Dave (MakoDHardie) also got an Rx-7 store DP, when we were installing it we came accross the same problem. With a little "fabrication" we worked around it. We used a dremel to cut tabs out of it to make up for the flange being welded incorrectly. Took about an hour to take care of.
04-13-03, 11:41 AM
#12
Your fix is exactly what I would need to do, but I'm going to get an exchange and upgrade to the M2 dp instead. I keep my car in great shape and because it's my baby I'm not going to settle for a kludge. Moreover, I don't want to give the fabricator/designer the impression that this is acceptable. It's not.
Dave
Dave
04-13-03, 11:54 AM
#14
It really wasn't exceptable, but we weren't about to put the Pre-cat back on. Also that is his daily driver so it had to be done that night. So we really didn't have a choice, we did contact Jason and send him pictures. He said he hadn't had any other complaints. But it's in there now and it works. 
04-13-03, 03:13 PM
#15
Eats, Sleeps, Dreams Rotary
Re: Damn stupid home mechanics
Originally posted by dgeesaman
2 hours last night, 3 hours today. One of the previous owners was a moron, and I can tell they once had a downpipe and put back the pre-cat to sell it. I've seen roadside mechanics in 3rd world countries who did a better job.
...
2 hours last night, 3 hours today. One of the previous owners was a moron, and I can tell they once had a downpipe and put back the pre-cat to sell it. I've seen roadside mechanics in 3rd world countries who did a better job.
...
...It's really nice having people like www.RX7.com work on your car. Look on the bright side...at least you can send your DP back.
04-14-03, 01:42 PM
#16
Originally posted by djantlive
I think one of the stock bolts on the precat is a different size than the other 3. Seem to recall that and I thought it was weird. How can the stud be installed backwards? It's screwed onto the manifold extension so it's gotta go in CW. Weird...
I think one of the stock bolts on the precat is a different size than the other 3. Seem to recall that and I thought it was weird. How can the stud be installed backwards? It's screwed onto the manifold extension so it's gotta go in CW. Weird...
Originally posted by djantlive
Anyhow, maybe the previous jobs were done by a cheap shop, not by the owner. I have a hard time thinking of an owner who go thru the trouble of putting in a dp and changing it out and still don't do the job right.
Anyhow, maybe the previous jobs were done by a cheap shop, not by the owner. I have a hard time thinking of an owner who go thru the trouble of putting in a dp and changing it out and still don't do the job right.
It makes some sense though: the current motor is a reman put in right before they sold it to the guy I bought it from. That sales receipt showed it was covered by some warranty plan. I imagine they put the pre-cat back on to avoid 'voiding' their warranty, and since it was going to be sold they didn't care.
Dave
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