Last post on Aug 13, 2009 at 7:19 AM
You are in the Speed Shop Tuning and Modification
What is this discussion about?
Acura Integra, Performance Mods, Engine
#1685 of 1734 Re: Help, I need somebody, Help not just anybody [uk_arch]
Jan 18, 2007 (9:05 pm)
Yes, a cold air intake does wonders for our GSR's. That's a great start and the very first mod I did. Get the AEM V2 CAI. You won't regret it. Easily 11-13hp at the wheels.
After that if you get hooked and want to continue spending $$ there are many things you can do. A muffler alone won't really do anything. It all depends how much you want to spend.
I have one of the best exhausts and that provides the best gains for the GSR. It's the Type-1R (T1R) 2.5" Power catback exhaust. I also replaced the Catalytic with the T1R 2.5" resonated test pipe. But in order to get these 2.5" diameter parts to fit you must have a header with a 2.5" collector. Integra headers except for Type-R, come with a 2.25" collector. So I suggest instead of getting an aftermarket 2.25" header and exhaust, go 2.5" all the way from header to CAT, to exhaust. The 2.5" piping all the way through provides much better gains than a 2.25" system. My car feels like a have a supercharger in it and my brother thinks my GSR is faster than his Type-R (I think so too) when he drove it a couple of months ago. The T1R exhaust and test pipe are also resonated to reduce the noise dramatically. It also comes with a silencer for the exhaust tip which helps a lot and only robs about 2-3whp. The company T1R I think claims that their exhaust alone provides 9-11whp. No 2.25" exhaust company comes even close. Add another ~5whp gain for the test pipe (if you 're allowed to replace the CAT where you live) and another ~7-8whp for a 4-1 Type-R header (OEM, JDM, or aftermarket) and you will easily gain 20whp with this setup. About 30whp all together with the AEM CAI.
I know I have easily 30whp more cause my car is just too much faster now since I added the 2.5" piping. I wish I had done that sooner and not play around with a header first and then this and that, all with 2.25" piping. Waste of money. Should have gone 2.5" from the start. The T1R also has an awesome sound. It sounds deep and like it means business. It can get a little tiresome and noisy on long trips though. Just turn up the radio a little and it's very liveable with the silencer on. I rarely take it off anyway. only when I go racing because to get that extra couple of HP when you remove it. Takes about 10secs to remove (1 hex screw). This exhaust really does sound amazing and looks really good too. It doesn't have the 4-5" coffee can look or diameter at the tip. I think it's more like a 3" diameter tip and it's slanted. The T1R exhaust and test pipe are Stainless Steel all the way through. Check out randmotorsports.com. They 're one of two companies in the US that carry T1R products. Dyno proven to give you more HP than any other exhaust, even more than Toda, Spoon and Mugen (the very expensive ones). There are 2 types of T1R exhausts for our cars. You want the Power exhaust that makes the most HP and torque. I know it transformed my car. I couldn't be happier with the acceleration now. I also have a very light flywheel which helps me rev faster but that's a lot of $$ in labor. You can do that when you replace the clutch. I had that before the T1R exhaust and test pipe and made a slight difference. The header, exhaust and test pipe made a HUGE difference. Had them all installed the same day. I thought I was driving a Type-R on the way home from the shop. Well worth the $1,050K for all 3 parts and the $200 in labor. It will bring your GSR back to life.
#1687 of 1734 ... in need of integra advice!
Jan 20, 2007 (9:09 am)
Hi im pretty new to the forums.
i need some advice,,, my neighbor is moving back to california and he cannot take his 1993 integra with him,,,, ist been sitting in the parking lot for about 2-3 months. i want to buy it from him,, he said he wants 2-3 hundred for it. i think its got some major engine damage,, last time i spoke to him he said that it burns oil and he was told that he needs a new engine. other than that the car is impecable inside and out. i dont know the trim of the car but i thing its the GSR because it pretty loaded its got the pwr moonroof, pwn antenna etc,, but im not sure...
i need to know if it is indeed a new engine it needs and what honda engines fit this model. and how much it will cost,,, if everything goes good i plan to eventually modding the car......... any answers will be greatly appreciated. i really like the car and ive heard nothing but good thinds about integras.
#1688 of 1734 Re: ... in need of integra advice! [944s]
Jan 20, 2007 (11:02 am)
The '92-93 Integra GSR is very rare. '92 is the first year the GSR came out. Chances are it's not a 1.7L GSR but most likely the Integra LS which came with a moonroof and all power stuff, or the GS which adds leather.
The RS/LS/GS '90-93 (2nd gen) Integras came a 1.8L motor and 130hp. The GSR had a 1.7L that put out 160hp.
You will not find a "new" engine for this car because they don't make them anymore. You should be able to find a rebuilt engine but you are probably better off getting a used or rebuilt B18b (140hp) engine from a '94-01 Integra. They cost about the same as the B18A engine of the '90-93 Integra.
You might have to make some modifications to the exhaust however or get a custom made exhaust because headers made for the B18b engine have a longer collector I believe. It's not too expensive to get custom length piping.
90GS should be able to answer all your questions because he owns a modded '90 Integra with a B18b motor. Hopefully he 'll visit the board soon.
#1689 of 1734 Re: ... in need of integra advice! [only1harry]
Jan 20, 2007 (11:35 am)
thx a lot man,, do you know if the B18b engine is a direct bolt-on (other than the header). and do you know how much it'll run for ( used or rebuilt??) and thx again for your imput!
#1690 of 1734 Re: ... in need of integra advice! [944s]
Jan 27, 2007 (10:51 am)
Should fit right in and work with the same tranny if I remember correctly.
Jan 28, 2007 (10:27 pm)
holy smokes, long time, my friend! Yeah, the Miata has gotten a beating from being a daily driver.
There's one road locally that has a wonderful design. There are two roads leading into this intersection. The westbound has a west/east traffic pattern, and the southbound is a one-way.
As you can see, if you're heading west, there's nowhere to go =P So, to turn around, there's a gravel pit to the south. I go in there and *BAM* the road falls off about 8 inches. The impact bent the front subframe and pulled the driver front tire back about 2 inches. It's sitting while I collect funds to fix it.
I'll be trading my 1.8 liter engine with a 99 head (best flow, no variable valve timing = good for early-model swap) for a new front subframe and larger 1.8 liter brakes on all four corners. Along with this repair/upgrade, I'll also be putting on new springs on the front and rear. I have Koni Yellows with GC coilovers. The front rate will be 450 lb/in and the rear will be 300 lb/in or 375 lb/in, depending on how crazy I feel like getting with it.
As for the IS300, although I haven't auto-x'd it, I did take it to the track today for a little bit of fun. It's supercharged, has a lightened flywheel, and a heavyduty ACT clutch. Suspension consists of Eibach prokit springs on stock shocks with Hotchkis front and rear sway bars.
It's a little twitchy on corner entry and a little tailhappy on the way out I guess that's the problem with ~250-300 lbft of torque available at 2500-7000 rpm. So, trying to be fast, it was fairly easy to drive, but with street tires and the competition being more experienced and on race tires, I was left in the dust. It was fun, though! It definitely needs an alignment and better tires if I want to become a little more competitive
#1692 of 1734 Re: harry! [garados]
Jan 29, 2007 (8:34 pm)
Hey buddy! Hope you get your Miata on the road soon. Can't they straighted out the subframe? You 're probably better off getting a "new" one anyway.
The 450F/300-375 is a good auto-x setup for the Miata. You 'll like it. Have you thought about getting Konis or aftermarket shocks (Bilsteins should be good too) for the IS300? Being on stock shocks with the Prokit springs can't be helping you. I was on H&R Sports on stock shocks with my GSR for 5-6mos shortly after I bought the car. Everything was great at first and handling felt good but after the 3d month handling started deteriorating and eventually 1 front shock started leaking and one rear started making a squeaking sound. It was right after I started auto-xing. The stock shocks couldn't take the 30% spring rate increase in the front and the 75% increase in the rear. Replaced with Konis, and I was immediately 2.5secs faster on a 45sec. course. The Eibach Prokit typically has 10% more aggressive spring rate than the H&R Sports. I think you 'll really benefit from aftermarket shocks. The IS300 is twitchy enough without aftermarket sway bars and with stock power. I can imagine the bigger bars make it more so but I 'm sure it's more evident because of all that extra torque from the S/C. All the more reason to improve the suspension (shocks, shocks ,shocks!) to handle all that power. It must be a blast to drive though. You should try and take it to the track to see what it does in the 1/4 mi. I 'd be very curious if I had that car. That way I would know who I can and can't race at the light
BTW, I haven't done that in a very long time until about 2 weeks ago when I raced a new '06 Civic Si. We were dead even (to about 75 and then we had to slow down) and I almost bogged and had to catch up from being behind a whole car length! I launched at around 2K RPM and let go of the clutch too fast Had I launched at 3K or more I think that Si would have been in my rear view mirror. Or, I would have been sitting there spinning my Azenis because it was 34deg. out. They don't grab well in the cold. Not too smart to drag race with summer tires in NY in January. I was actually about 1/4 car ahead at the end and my 3d gear was just kicking in. I would have liked to red line 3d all the way to 90 and see how it stands up to the Si's 3d gear. My car is a different animal now after the 2.5" piping all the way through with no CAT, and the JDM Type-R 4-1 header (with 2.5" collector).
The reason our Integras (Civics, Miatas, etc.) get noticeably faster with some simple mods and a "few" ponies is because they are light compared to most cars. Mine weighs 2582 now with 1/3 gas tank! The lighter exhaust and header shaved off quite a few pounds. It used to weigh 2601 with the lighter Titanium ( and aluminum) Advance Design race shocks and 1/4 tank with stock header and exhaust (no spare, but full interior, lighter wheels, and no trunk floor board, lightened flywheel, etc). The Konis I have now are at least 10lbs heavier the 4 of them, than the AD's. So this means I shaved 29lbs with the T1R exhaust, test pipe, and header. If my car was 3200lbs like a 3-series Bimmer or an Accord V6, I doubt 25-30whp would have made a big difference. The weight is a big factor. A good local auto-xer here has a Mazdaspeed (turbo) 170hp motor in his '90 Miata (in Street Mod) with bolt-ons (I/H/E). You would think that Miata has at least twice the HP if you watched it race. He claims the motor is completely stock. It's because it barely weighs 2200lbs.
#1693 of 1734 Re: harry! [only1harry]
Jan 29, 2007 (9:23 pm)
oh yeah, weight is a huge issue for me =P Speaking of which, I've dropped about 30 pounds since last summer! Stopped eating all that junk food and being a couch potato.
Anyways, I'd love to strip the IS300 down to one seat and a dashboard, but I don't think my girlfriend would enjoy that too much When I did the flywheel and clutch job, I was expecting to see a flywheel on par with the one from the Integra, about 20 pounds for the flywheel and about the same for the clutch. It ended up being ~40 pounds for the flywheel (it's a dual mass with a solid clutch disc) and the clutch/pressure plate wound up being 25-30 pounds. The new pieces were ~25 pounds together. It made a HUGE difference in acceleration and throttle response. It went from being slower than a WRX to being almost on par with an STI.
As for the Miata, it's going on a crash diet when the subframe is replaced. I'm going to pull the AC, power steering pump and lines, carpeting, and everything that isn't necessary for around-town driving. I'll relocate the spare tire to underneath the car to get more room in the trunk.
With the new subframe, it'll be getting new upper and lower control arm bushings and balljoints. I think it'll feel like a brand new car when all that's done. I'm also thinking about doing a "butterfly brace" which has covers for the frame rails and a large cross member that'll tie the sides of the car as well as the front and rear of the car together.
People are saying that it makes a huge difference in the way the car rides and handles. Instead of the chassis flexing, the suspension will actually have to do its job
I'm excited to get everything together and running on the Miata. I miss the sharpness that the Miata has when it turns. Sure it's not as powerful as the IS300, but the handling is lightyears ahead due to the fact that it has 1000-1100 pounds less to lug around
Feb 01, 2007 (8:57 pm)
Well, I wanted a new subframe and it happened! Got it aligned yesterday and took it out today for a nice drive around town. All I have to say is that I should have done this stuff long ago. The car is so responsive now, it's amazing.
For the alignment, I got the following:
toe 0.1* in
I also got the chance to put the larger brakes on the front. "WOW!" was the first thing I said when I laid into the stop pedal. It has street pads on there now (Hawk HP+ pads on the old setup) and they have an amazing cold bite. What really got me, though, was that the warmed-up braking was MUCH better than the hawks. The first hard stop I did, I though my face was peeling off my skull All in all, ~1 inch more in diameter and another 3/8 of an inch in thickness combined with a beefier caliper makes for a VERY worthwhile upgrade
I'm excited for the warmer weather and some more funds to get nice tires for my 16's (gunmetal Rota GT3, polished lip) and just go drive with the top down.
Take care everybody!