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The engine won't take more than 10 - 12 pounds of boost without backfiring and having 15 degrees of retard. Coil pack and module are good. Fuel pump is good. Fuel pressure rises appropriately with boost. Spark plugs and wires are new. Cam sensor is new and checked for proper setting multiple...

Will this tire fit on stock rims and not rub the frame? BF Goodrich Drag Radial 275-50-15. Thanks.

The trans only has 400 miles on it and it was built by a reputable person who is experienced with this trans. The car has not been raced. Just easy Sunday driving miles. A noise started today when I was less than a mile from my house so I drove home and parked it. When the car is in park...

Getting car painted. My trunk emblem is not on the car. I need to tell them where to place it. How far is it from the left edge of the trunk lid? Thanks.

Is there a company out there that will refinish the stock GN wheels so they are perfect again? Thanks.

I can't locate one online. Where can I get one? Thanks.

All of a sudden while drving the car started running weird. Not hesitating, not bogging, and not cutting out. It's just not running right. The engine sounds different, and I think I hear valve train noise. I have broken many rocker arms in the past and I thought that's what it was since it...

All my cylinders are # 1 = 93 psi #2 = 100 psi #3 = 100 psi #4 = 95 psi #5 = 97 psi #6 = 102 psi Right after the rebuild they were all about 110 psi. I have about 1,500 miles on the rebuild I did 9 years ago. Last leakdown test check on the gn was on 10-11-06 which is only 600...

What shop should I take my car to help me figure out the proper pushrod length. I don't want to do the measurements myself because I don't know all the ideal valve train geometry specs. Thanks.

My chip is a Red's chip from about 9 years ago. Have there been any real changes in any part of the programming since then? If so, then what areas have been improved? Thanks.

I don't know what my compression ratio is, but the block has been decked a little and so have the GN1 aluminum heads. The battery is new. It is rated at 875 CCA. The alternator is brand new. Both of these have just been put in the car. There is NO draw on the battery when the...

A diagram would be helpful, but I can't find it in the service manual. There is a pink wire with a black stripe and a black wire with a white stripe. What are these used for? Connector Pinout Diagrams This web page doesn't seem to correspond to the wires coming out of my ecm. Is this...

Went out for a ride tonight. I had 22# as usual on the first couple WOT, for the next few it only got 17#. That has never happened before. The car runs fine. Everything looks good under the hood (boost lines and wastegate position) Any ideas of what else to check or why this would...

I can't figure out why there is oil on top of my manifold. I have replaced the pcv check valve, and the grommet where the pcv goes into the manifold. I put hose clamps on both sides of the pcv check valve. There is a huge puddle of oil on my manifold. I can remove the oil from the top...

Would you please tell me how? Thanks.

I haven't been on the boards in a few years, so I don't know what the latest trans upgrades are. My trans only has neutral right now. So, it may be the forward clutch drum. I'm going to have a local shop rebuild my 200r4. They don't specialize in these trans. They specialize in trans...

Stock trans beefed up by someone who is very knowledgeable. I don't know the particulars. It has about 1,000 miles on it. I have had NO drivetrain symptoms or noises until yesterday. Accelerating normally from a red light, after it shifted into third all of a sudden I hear a clunk and...

I have about 1,000 miles on the rebuild. The heat range of the plugs is correct. I just did a leakdown test and all cylinders were at about 10%. I usually run alcohol injection. All of the plugs looked really rich and had some dark deposits that were wet looking. My egts are always...

I haven't changed my plugs in several years since I don't drive the car much. 5 years ago I put in Autolite 103 racing plugs. I think the 103 is 2 heat ranges cooler than stock, but I can't remember for sure. Info on my car. 86 gn, mild ported gn1 aluminum heads, 63 turbo, 55# injectors...

There is a large puddle of oil on the rear of the manifold. There is some oil on the first 2 inches of the line coming out of the vacuum block that leads to the pcv check valve. How and why could this have happened?