Holbert race car gets 305s up front with no body work (kind of)
02-03-2009, 08:46 PM
#91
Rennlist Member
Thread Starter
I stopped using the 335s as they were a little too tight on the rear and dont think they stuck as well due to being pinched at the sidewall with my 11" rims. However, if i had 12s in the rear, I would use them. I have a set of the rears 335s that are in great shape and will be selling.
on the fronts, its a little close, but my car is slammed too. however so far so good. rubbing is slight only when driving to the store, but when beating on it, there doesnt seem to be any . at the track I was getting some but since then have moved the fenders out a little more.
I really want to get a full racing track session on the set up to see if it helps. Ill be doing this at sears where the plan is to run the practice on them all out and then switch to the known entities for qual and run the set up that felt best for the race. If it works better with the 305s up front, ill put on some newer front 305s and commit to that as my race set up.
what are you buying the used tires for, and who are you getting them from?
Im wondering if any of the WCGT vipers are using the 295x30s in front.
The 305s might just be the right tire up front. I will see!
mk
on the fronts, its a little close, but my car is slammed too. however so far so good. rubbing is slight only when driving to the store, but when beating on it, there doesnt seem to be any . at the track I was getting some but since then have moved the fenders out a little more.
I really want to get a full racing track session on the set up to see if it helps. Ill be doing this at sears where the plan is to run the practice on them all out and then switch to the known entities for qual and run the set up that felt best for the race. If it works better with the 305s up front, ill put on some newer front 305s and commit to that as my race set up.
what are you buying the used tires for, and who are you getting them from?
Im wondering if any of the WCGT vipers are using the 295x30s in front.
The 305s might just be the right tire up front. I will see!
mk
So Mark, I'm thinking about doing the exact same thing on my car. My eventual plan, when I get the time (not for another 10 months at least), is to widen my front wheels and flare my fenders. For now, I have two options: Put 275's on the front and 305's or 335's on the rear, or do what you did and put 305's on the front with 335's on the rear. My front wheels are identical in specs to yours (10" w/ 8.5" backspace).
Now that you have more time with this setup, would you recommend it? The cost difference is negligible, as the tires (used) are essentially the same price.
Now that you have more time with this setup, would you recommend it? The cost difference is negligible, as the tires (used) are essentially the same price.
02-04-2009, 12:33 AM
#92
Drifting
I might go ahead and try it out. I've flared my rear fenders a good bit and will be widening my wheels to 12" with some new outers. The rear track is a decent bit wider, but I'll be widening the front not too far in the future. Hard to tell from this picture, but I'm actually running 10.5" rear wheels here with 2" spacers. I'll be taking off the spacers and adding 1.5" to 2" to the rear outers and putting the rear outers on the front once I flare the front.
02-04-2009, 01:09 AM
#93
Race Director
Mark B
Okay what is it with guys named Mark who have nice 928 race cars??????????????????
I haven't measured how much wider my track shark is compared to a stock 928...but it supposedly had GTS flares welded in and those were flared quite a bit...so I would guess its 1.5" wider than stock seems about right....the 335's fit with ease on 18x12" wheels with 8.25" backspacing and about a 1/2" spacer
Where did you get your wing? Thats yet another thing on my "list"
Okay what is it with guys named Mark who have nice 928 race cars??????????????????
I haven't measured how much wider my track shark is compared to a stock 928...but it supposedly had GTS flares welded in and those were flared quite a bit...so I would guess its 1.5" wider than stock seems about right....the 335's fit with ease on 18x12" wheels with 8.25" backspacing and about a 1/2" spacer
Where did you get your wing? Thats yet another thing on my "list"
02-04-2009, 01:29 AM
#94
Drifting
Hey Brian,
I've been following some of your threads, and I'm pretty sure your rear flares are a good bit larger (and different) from GTS quarters. When you take off a rear wheel, look up in the fenderwell and see how they were attached, or if they were hammered out. I actually hammered mine out, and I'm about 2.5" to 3" wider per side from stock. Here is a little better picture of the flares from the rear, and it looks like yours is pretty similar. Yours almost look like the Devek flares made years ago, except those were FRP, and yours appear to be steel.
I got the wing from a random guy several years back, but it is essentially the same wing as the GT Racing 60" (I think). Check out their catalog, I think their website is gt-racing.com or something. I made the mounts custom, if you are looking for some more pics, I have a few more posted on flickr at http://www.flickr.com/photos/2380486...7612290923660/
Love your car BTW!
I've been following some of your threads, and I'm pretty sure your rear flares are a good bit larger (and different) from GTS quarters. When you take off a rear wheel, look up in the fenderwell and see how they were attached, or if they were hammered out. I actually hammered mine out, and I'm about 2.5" to 3" wider per side from stock. Here is a little better picture of the flares from the rear, and it looks like yours is pretty similar. Yours almost look like the Devek flares made years ago, except those were FRP, and yours appear to be steel.
I got the wing from a random guy several years back, but it is essentially the same wing as the GT Racing 60" (I think). Check out their catalog, I think their website is gt-racing.com or something. I made the mounts custom, if you are looking for some more pics, I have a few more posted on flickr at http://www.flickr.com/photos/2380486...7612290923660/
Love your car BTW!
02-04-2009, 02:14 PM
#95
Rennlist Member
Thread Starter
Man, that is one good looking race car!! Love it!
so, how do you get it on the trailer with the splitter? reallly long ramps?
mk
so, how do you get it on the trailer with the splitter? reallly long ramps?
mk
I might go ahead and try it out. I've flared my rear fenders a good bit and will be widening my wheels to 12" with some new outers. The rear track is a decent bit wider, but I'll be widening the front not too far in the future. Hard to tell from this picture, but I'm actually running 10.5" rear wheels here with 2" spacers. I'll be taking off the spacers and adding 1.5" to 2" to the rear outers and putting the rear outers on the front once I flare the front.
02-04-2009, 02:28 PM
#96
Rennlist Member
Thread Starter
you hammered the rear quarters? so did i and i didnt get that much room!
how wide is your total rear track now. (tire edge to tire edge) ?
how wide is your total rear track now. (tire edge to tire edge) ?
02-04-2009, 04:29 PM
#97
Drifting
Thanks Mark! I have it written down somewhere, but I'm away from the car and can't measure it. I think outside to outside is around 77", maybe just a hair less. I didn't just roll the quarters, I spent two days with a hammer and dolly expanding and shaping the fenders. The first pic is after I worked it out some with a shot bag and ball-peen hammer, and the second and third are after I was pretty much done shaping and had started smoothing.
I'm leaning towards going on and setting up the 305's and 335's. I know it's probably overkill, but if I do 275 front and 305 rear, I won't be able to change the rear wheel widths yet and I'll have to get different spacers so the tires don't rub. I'd like to just go on and finish the rear anyway, and next year I can change the outers on the front wheels and flare the fenders.
PS- I appreciate all of the posting you have done in the past about your car. It helped me countless times over the past four years while building mine.
And also--you'll notice the old wing mounts that were the topic of discussion a while back. They have since been changed with the steel plate ripped out with a much simpler and lighter setup.
I'm leaning towards going on and setting up the 305's and 335's. I know it's probably overkill, but if I do 275 front and 305 rear, I won't be able to change the rear wheel widths yet and I'll have to get different spacers so the tires don't rub. I'd like to just go on and finish the rear anyway, and next year I can change the outers on the front wheels and flare the fenders.
PS- I appreciate all of the posting you have done in the past about your car. It helped me countless times over the past four years while building mine.
And also--you'll notice the old wing mounts that were the topic of discussion a while back. They have since been changed with the steel plate ripped out with a much simpler and lighter setup.
02-04-2009, 04:41 PM
#98
Rennlist Member
Thread Starter
Oh yeah, i remember now! Man, you really hammered!
Glad my project pics helped out yours. especially glad you changed the wing mounts. If you look at mine, its a simple L bracket with 2 bolts to the rear hatch. I see so many guys that need support wires, braces, etc to make them work, yet, this simple design works fine and doesnt require the "STEEL" you almost put in the car!
When are you going to put it through its paces. Too bad you guys are not out west. I would love to see these cars in person sometime soon!
my pic of my, now seemingly, so weak of a pounding job.
mk
Glad my project pics helped out yours. especially glad you changed the wing mounts. If you look at mine, its a simple L bracket with 2 bolts to the rear hatch. I see so many guys that need support wires, braces, etc to make them work, yet, this simple design works fine and doesnt require the "STEEL" you almost put in the car!
When are you going to put it through its paces. Too bad you guys are not out west. I would love to see these cars in person sometime soon!
my pic of my, now seemingly, so weak of a pounding job.
mk
Thanks Mark! I have it written down somewhere, but I'm away from the car and can't measure it. I think outside to outside is around 77", maybe just a hair less. I didn't just roll the quarters, I spent two days with a hammer and dolly expanding and shaping the fenders. The first pic is after I worked it out some with a shot bag and ball-peen hammer, and the second and third are after I was pretty much done shaping and had started smoothing.
I'm leaning towards going on and setting up the 305's and 335's. I know it's probably overkill, but if I do 275 front and 305 rear, I won't be able to change the rear wheel widths yet and I'll have to get different spacers so the tires don't rub. I'd like to just go on and finish the rear anyway, and next year I can change the outers on the front wheels and flare the fenders.
PS- I appreciate all of the posting you have done in the past about your car. It helped me countless times over the past four years while building mine.
And also--you'll notice the old wing mounts that were the topic of discussion a while back. They have since been changed with the steel plate ripped out with a much simpler and lighter setup.
I'm leaning towards going on and setting up the 305's and 335's. I know it's probably overkill, but if I do 275 front and 305 rear, I won't be able to change the rear wheel widths yet and I'll have to get different spacers so the tires don't rub. I'd like to just go on and finish the rear anyway, and next year I can change the outers on the front wheels and flare the fenders.
PS- I appreciate all of the posting you have done in the past about your car. It helped me countless times over the past four years while building mine.
And also--you'll notice the old wing mounts that were the topic of discussion a while back. They have since been changed with the steel plate ripped out with a much simpler and lighter setup.
02-04-2009, 04:52 PM
#99
Drifting
Haha, no almost about it; those babies were welded in and the car was totally painted before I decided to cut it all out and redo. A hard decision for sure.
I ended up welding a piece to the panel gap between the hatch and body, then bolting an aluminum mount to that. I don't have any good pictures of the actual uprights, but here are the mounts:
I've driven it on the track once (last July) and it performed wonderfully. My dad has since taken it to Road Atlanta twice, and I plan on hitting the track in the next two months or so. Unfortunately, I'll be pretty busy this year, so I probably won't start racing it for another year or so. The only question mark is the engine, as it has a case of disappearing water somewhere--no leaks that I can find, and no smoke out of the exhaust. It runs fabulously, though, and I can't wait to drive it again. It was so balanced and neutral... almost as easy to slide around as my kart. I'll post up soon with a comprehensive update on the car, probably after the next time I take it on track.
I ended up welding a piece to the panel gap between the hatch and body, then bolting an aluminum mount to that. I don't have any good pictures of the actual uprights, but here are the mounts:
I've driven it on the track once (last July) and it performed wonderfully. My dad has since taken it to Road Atlanta twice, and I plan on hitting the track in the next two months or so. Unfortunately, I'll be pretty busy this year, so I probably won't start racing it for another year or so. The only question mark is the engine, as it has a case of disappearing water somewhere--no leaks that I can find, and no smoke out of the exhaust. It runs fabulously, though, and I can't wait to drive it again. It was so balanced and neutral... almost as easy to slide around as my kart. I'll post up soon with a comprehensive update on the car, probably after the next time I take it on track.
02-04-2009, 05:10 PM
#100
Rennlist Member
Thread Starter
the old missing water trick. Yep, scot had this, and I even had a little bit of this with the holbert car toward the end of last season. (about a quart of water missing every weekend)
scots was the head gasket, but we knew this due to the lack of head bolt tension and we used the head gasket checker kit to confirm. (blue water kit that is used as engine gets hot) If the water turns to yellow, you have exhaust gasses in the water and that means its not good. also, scot put the overflow hose into the passenger compartment so he could see it fill up during a race. when it got to 1 quart in the jug, he pulled into the pits.
I really like the exhaust exit design too. that is very cool!
mk
scots was the head gasket, but we knew this due to the lack of head bolt tension and we used the head gasket checker kit to confirm. (blue water kit that is used as engine gets hot) If the water turns to yellow, you have exhaust gasses in the water and that means its not good. also, scot put the overflow hose into the passenger compartment so he could see it fill up during a race. when it got to 1 quart in the jug, he pulled into the pits.
I really like the exhaust exit design too. that is very cool!
mk
Haha, no almost about it; those babies were welded in and the car was totally painted before I decided to cut it all out and redo. A hard decision for sure.
I ended up welding a piece to the panel gap between the hatch and body, then bolting an aluminum mount to that. I don't have any good pictures of the actual uprights, but here are the mounts:
I've driven it on the track once (last July) and it performed wonderfully. My dad has since taken it to Road Atlanta twice, and I plan on hitting the track in the next two months or so. Unfortunately, I'll be pretty busy this year, so I probably won't start racing it for another year or so. The only question mark is the engine, as it has a case of disappearing water somewhere--no leaks that I can find, and no smoke out of the exhaust. It runs fabulously, though, and I can't wait to drive it again. It was so balanced and neutral... almost as easy to slide around as my kart. I'll post up soon with a comprehensive update on the car, probably after the next time I take it on track.
I ended up welding a piece to the panel gap between the hatch and body, then bolting an aluminum mount to that. I don't have any good pictures of the actual uprights, but here are the mounts:
I've driven it on the track once (last July) and it performed wonderfully. My dad has since taken it to Road Atlanta twice, and I plan on hitting the track in the next two months or so. Unfortunately, I'll be pretty busy this year, so I probably won't start racing it for another year or so. The only question mark is the engine, as it has a case of disappearing water somewhere--no leaks that I can find, and no smoke out of the exhaust. It runs fabulously, though, and I can't wait to drive it again. It was so balanced and neutral... almost as easy to slide around as my kart. I'll post up soon with a comprehensive update on the car, probably after the next time I take it on track.
02-04-2009, 08:02 PM
#101
Race Director
Mark-Mark
Originally I was told my flares were welded in, then hammered out.....then I looked at it...they are 100% welded......there is a seam up there all the way around the cut out mark of the old stock fender...
I'll measure the rear track next time I go to shop (probably Friday)
Originally I was told my flares were welded in, then hammered out.....then I looked at it...they are 100% welded......there is a seam up there all the way around the cut out mark of the old stock fender...
I'll measure the rear track next time I go to shop (probably Friday)
06-26-2010, 04:30 PM
#103
Addict
Rennlist Member
Rennlist Member
Mark,
do you think your method of pulling the fenders slightly outward will work on an '82 as well?
I can't seem to fit my 295's on 10" wheels with 8" backspacing under the front fender...
do you think your method of pulling the fenders slightly outward will work on an '82 as well?
I can't seem to fit my 295's on 10" wheels with 8" backspacing under the front fender...
06-26-2010, 05:08 PM
#104
Rennlist Member
Thread Starter
absolutely, you will NO WAY get that to work any other way. I had 10s with 8.5" backspacing, and now I finally have a set of 10s with 8" backspacing too that have a ton of room to spare. 295s will be no issue, but you have to do what I did.
06-26-2010, 07:30 PM
#105
Drifting
Agreed 100%... gotta do some pulling or maybe even some cutting.